What Nematodes Should I Buy?

March 15, 2013 by  
Filed under General



So, you have decided to use beneficial nematodes in the treatment of your pest problems.  But now  you are faced with determining where to buy your nematodes, how many nematodes to buy, or if it even matters.  Considering the writers of this blog work for a nematode supplier, you may have an idea where this is going, but we hope the following serves as a truly informational and factual nematode buying guide.

Consider when buying nematodes

-Where are your nematodes actually coming from?

The first things to consider in selecting your nematode supplier is where (geographically) they are coming from, and who is selling them.  When buying a perishable and microscopic product, you certainly want to make sure you chose a reputable supplier.  Many suppliers are actually re-sellers of nematodes, meaning they don’t actually produce the product you are purchasing.  So what does that matter?  Nematodes are perishable little guys, especially before they create a nice cozy home for themselves in your soil.  Shipping stresses them, and can even kill many of them if they are not adequately packaged or if they end up in transit too long.  Buying from a re-seller could mean you are purchasing nematodes that have spent too much time in shipment or storage, resulting in many fewer living nematodes than you paid for.  Unfortunately, without a microscope most customers don’t even have the ability to check whether their product is living or dead.  BioLogic is a nematode producer with experience shipping nematodes all over the world. We are experts on selecting the type of shipment that will ensure your nematodes arrive in tact and alive, at a fair price.  And being the producer, the nematodes start out without any earlier stress from shipment.

-How many nematodes do I need?

The next thing to consider is the number of active units (aka infective juvenile nematodes) you need to effectively treat your garden or lawn.  As nematodes become more popular, there are an increasing number of nematode suppliers out there making all sorts of promises.  They employ creative marketing techniques and often times exaggerate application rates.  BioLogic recommends 13,000-35,000 nematodes per square foot.  This number varies a bit depending on the pest, so check out our website or contact us  for specific application rates for your pest.  Our recommendation is based on our research, and the research of reputable institutions like Cornell University.  In an effort to sell more nematodes, many companies exaggerate their application rates.  They will claim that lesser amounts of nematodes will treat a larger area.  Or, they will (in small print) tell you to reapply every 2 weeks- who has time for that?  When comparing prices remember to compare the number of active nematodes in each package as well.  You are not getting a great deal if the product you buy doesn’t actually have enough nematodes to take care of pests in the size garden you are treating.  BioLogic’s advice is if the company can’t give you the correct application rate, stay away.  Chances are they don’t really know much about nematodes, and they are just trying to make a buck on customers that don’t know better.  And if they don’t list the number of nematodes on the package… stay far far away.  If you try to spread too few nematodes over too large a space, you are not likely to have very good results and may be inclined go back to potentially harmful chemicals.

-Where to buy nematodes?

The last thing to consider in determining where to buy your nematodes, is what retail outlet you should actually chose.  Nematodes can be purchased online, in big box stores, or at garden centers.  Big box shops are now carrying nematodes, but if you can’t trust the college kid working there to direct you to the hardware section, do you really want to trust him to give you advice on something like beneficial nematodes?  Large hardware stores are good at selling nails and screws because they are not perishable, but nematodes require a bit more tender loving care.  We aren’t saying these stores are bad (in fact we quite like them!) just remember that you want to ensure you are buying a product that has been carefully stored at the right temperature.  If you want to go this route be sure to ask questions and tread cautiously.  BioLogic considers reputable garden centers to be the ideal place to buy nematodes.  Before selling our products through a garden center we walk the staff through the proper storage and application of our products.  When you buy our products from a garden center you can have comfort knowing the products were properly stored, and the staff educated. Check out if there is a garden center near you that carries our products here.  Don’t see a garden center near you?  Ask your local garden center to start carrying our products!  Or you can always buy directly from BioLogic, the producer, on our website.

We sincerely hope this guide helps you navigate the world of nematodes and chose a reputable supplier.  BioLogic wants people to have a good experience and realize success with nematodes, and we certainly hope this guide helps!  As always, if you have any questions feel free to explore our website or contact us.

Ready to buy nematodes?  We recommend our Lawn and Garden Scanmask product or try the easy to spray version.

Lawn and Garden ScanmaskScanmask Spray 10 Million

Feel free to ask us questions below.



228 Comments on "What Nematodes Should I Buy?"

  1. Brevoort Walden on Thu, 25th Apr 2013 12:40 am 

    Hi. I have a poplar borer problem in my aspen trees. Is your product a good choice for control of this pest?

  2. biologiccompany on Thu, 25th Apr 2013 1:51 pm 

    Hi. The nematode that you will want to treat the poplar clearwing borer with is Scanmask (S. feltiae). We recommend treat with about 80,0000 nematodes per bore hole, actually spraying or injecting into the hole and infected area. Then covering the bore hole with putty. Scanmask works great for borers, the only problem is that to you will need to spray into each bore hole which can be labor intensive. But since the clearwing borer has a long lifecycle the process should not have to be repeated too frequently. I would recommend or 1M, 5M, or 10M Scanmask spray product depending on how many bore holes you have.

    Just a tip, borers tend to target stressed trees, make sure they are being watered and fertilized adequately.

    Thanks for the question,


  3. colleen on Sat, 27th Apr 2013 11:27 am 

    I have a severe gnat ( or midge) issue, what do you suggest?

  4. biologiccompany on Sun, 28th Apr 2013 12:01 am 

    Hi Colleen. I would suggest treating with one of our Scanmask products (Steinernema feltiae). The nematodes in Scanmask work great for fungus gnats. One million treats about 28 square feet. Thanks for the question!

  5. john sypien on Thu, 2nd May 2013 2:55 am 

    I live in Florida, I can’t walk outside my yard is flea infest they are cat fleas what can I use to rid this problem

  6. biologiccompany on Thu, 2nd May 2013 12:08 pm 

    Hi John. I would recommend any one of our Ecomask products. The nematode in Ecomask, S. carpocapsae is best suited for flea larva. Thanks for the question.

  7. Tee2e on Sun, 19th May 2013 4:22 pm 


    We have white grub and fleas in a 4000 sq ft area. what’s thge best product or combination of products to combat?

  8. biologiccompany on Mon, 20th May 2013 1:42 pm 


    The best product for the white grubs is our Heteromask product. However, depending on where you live it might be too late to apply Heteromask for the summer. I would suggest treating in late August through September with Heteromask for the white grub problem. The flea larva are more susceptible to our Scanmask product. You can treat anytime the soil is not frozen for fleas. Concentrate your application on the shaded areas of the lawn. Thanks for the question. Feel free to ask more questions if the arise.

    BioLogic Company

  9. Sam Prisuta on Sun, 2nd Jun 2013 4:19 am 

    I bought scanmask nematodes a few months ago and used them to rid my wife’s Hosta beds of grubs, and to eliminate a few large ant hills that have plagued me for years. I was AMAZED that in a few weeks, the ants were gone, and the Hostas have NO sign of any bug infestation. The nematodes really did the job, and I’m sure that I will be ordering more soon!

  10. Beth on Sun, 7th Jul 2013 12:08 am 

    Okay, you suggested using heteromask for my Japanese beetles–which I can’t wait to try, but what about the whitefly problem on my knockout roses?? Same spray or a different one? Needless to say our yard, which borders a wooded area, is somewhat vulnerable to lots of critters and insects. BTW I’m loving your very informative website. Thanks!

  11. biologiccompany on Mon, 8th Jul 2013 12:23 pm 

    Hi Beth,

    Unfortunately nematodes will not be able to help you with the white fly problem. White flies live on the foliage and the nematodes live in the soil so the two never have a chance to interact. I would suggest a soft soapy mixture or neem oil applied to the underside of the leaves. As for the other insects you might try our Scanmask product. Scanmask controls the largest variety of pests, but without knowing what type of insects are around your lawn it is difficult to say what the control will be like.

    Thanks again for the questions,

    BioLogic Company

  12. Jay on Wed, 10th Jul 2013 12:08 am 

    I have one acre of lawn with a large garden in that acre. We have a moderate June bug, Japanese Beetle and mole problem. I would like to treat the whole yard and garden.. What do you suggest?

    In North Carolina.

  13. biologiccompany on Wed, 10th Jul 2013 2:01 pm 

    Hi Jay,

    The beetles are adults right now, so applying in late September after they have laid their eggs in the turf would be your best option. Apply with Heteromask at a rate of 19,000/sq. ft. Since a biological approach is more expensive than chemicals I would suggest you treat only the areas of the lawn and garden with damage or signs of grub activity. Without a host to infect the nematodes will die off over time, so treating an area without grubs is a waste of money and time.

    Thanks for the question,

    BioLogic Company

  14. Anna on Thu, 11th Jul 2013 4:42 pm 

    I’m on Long Island & have 2 potted Brugmansia – one in a 12 gal container & another in a 3 gal container. Both have fungus gnats. How much Scanmask should I use for each container & what would be the best way to apply it? Also, how long do the nematodes stay alive? Thank you for your time. Have a wonderful day.

  15. biologiccompany on Fri, 12th Jul 2013 5:33 pm 

    Hi Anna,

    You could use either our 1M or 5M Scanmask Spray product and split it between the two pots. I would suggest treating any other pots you have inside or in the general area as well. Just mix the nematodes into water and apply through a watering can. It is difficult to give a length to how long the nematodes will stay alive especially in pots. To maximize the time they are alive make sure the soil never dries out completely.

    Thanks for the question,

    BioLogic Company

  16. Chris on Sat, 13th Jul 2013 2:15 am 

    I have cucumber beetles popping up all over my cucumbers and melons. When and what should I use?

  17. biologiccompany on Sat, 13th Jul 2013 8:13 pm 

    Hi Chris,

    Unfortunately there is little that can be done about the adult cucumber beetles. But the good news is cucumber beetle larvae, commonly known as corn root worms, can be controlled by the nematodes in Scanmask. There will probably be two more generations this year so I would recommend treating now. Use Scanmask around the plants that are infested as this will probably be where the eggs will be laid.

    Thanks for the question,

    BioLogic Company

  18. Renae Hughes on Wed, 17th Jul 2013 4:56 pm 

    Good Afternoon 😉 I read today that nematodes are good to get rid of a mosquito problem. My mom’s yard is about 30’x60′ and you cannot sit outside for the critters biting you! I see that it obviously takes a lot of nematodes to treat this size of yard and in reading there are different types to purchase. Therefore, what type and how much do I purchase? Thank you, Renae Hughes

  19. biologiccompany on Thu, 18th Jul 2013 4:04 pm 

    Hi Renae,

    Unfortunately you were given some bad information. Nematodes are soil dwelling organisms. The mosquitoes either live in standing water as larvae or as adult flies. No where in their life cycle would nematodes be able to infect and kill the mosquitoes. The best advice is to remove any standing water you can, and what you can\’t you may try adding mosquito dunks. Sometimes crane flies are mistaken for mosquitoes and crane fly larvae can be controlled by nematodes, but if you are getting bites then they are definitely mosquitoes.

    Thank you for the question sorry we can not help more,

    BioLogic Company

  20. Patricia on Thu, 25th Jul 2013 12:37 am 

    How much and what type of nematode can I use for 1/2 acre dog run? I am in the Pacific NW where everything grows like weeds, esp fleas!

  21. biologiccompany on Thu, 25th Jul 2013 12:17 pm 

    Hi Patricia,

    You can treat fleas with either S. carpocapsae or S. feltiea (Ecomask or Scanmask).

    Thanks for the question,

    BioLogic Company

  22. TMount on Fri, 26th Jul 2013 1:01 am 

    I recently had black vine weevils DECIMATE my clematis which is several years old. I understand that the next step in their life cycle is for any eggs they may have dropped in the garden to hatch into larvae which will then attack the roots. I’m not sure how the weevils arrived in my garden, so I don’t want to only treat the clematis but the other perennials (including some new plantings) surrounding it as well. Which nematodes should I use? I think I will be treating approximately 75 sq ft.

  23. biologiccompany on Fri, 26th Jul 2013 1:53 pm 


    Black vine weevils usually are introduced by bringing new plants into your garden or flower beds as they are not very mobile insects. You are correct the next stage of their life cycle are eggs that will quickly hatch into grubs that begin feeding on the roots of the plants. This is actually where most of the damage is done, but it is also where the nematodes can infect and kill the black vine weevils. I would suggest our 25M Heteromask product. It is a bit more than what you will need, but I would suggest broadening your application to plants surrounding the clematis and any plants you may have introduced in the last couple years. When applying water the treatment area first, apply Heteromask with a coarse spray, and then water again. The nematodes will begin hunting down the larvae.

    Thanks for the question,

    BioLogic Company

  24. Lori on Fri, 2nd Aug 2013 9:18 pm 

    Hi, I live in Pennsylvania and have a reoccurring flea problem. What type of nematodes would i use in my 0.6 acre yard?

    Thank you!

  25. biologiccompany on Mon, 5th Aug 2013 2:48 pm 

    Hi Lori,

    I would recommend our 50M Scanmask Spray, and concentrate the application around shrubs and shaded areas of your lawn.

    Thanks for the question,

    BioLogic Company

  26. Denise on Sun, 25th Aug 2013 11:59 am 

    Do Nematods help with tick infestations? I live in South Florida.

  27. biologiccompany on Mon, 26th Aug 2013 3:56 pm 

    Hi Denise,

    No nematodes will not help with a tick infestation. Nematodes are soil dwelling organisms and ticks spend their life entirely above ground. Without a part of their lifecycle in the soil there is not much chance of the two interacting.

    Thanks for the question,

    BioLogic Company

  28. Heather on Mon, 26th Aug 2013 6:24 pm 

    Are nematodes to use in a yard where there are Miniature Schnauzers? We live in Central Texas and the Japanese Beetles are horrible. We read that we could dust our front and back yard with the HC nematodes to get them now while they are mating and fixing to lay their eggs. Is that true? And most important will they harm our dogs? Are dogs are always trying to scavenge for all kinds of bugs, so we want to make sure that if they did get into the nematodes and digest them that they would be safe!!


  29. Ken Hovanes on Mon, 26th Aug 2013 7:14 pm 

    I am an amateur beekeeper and have been keeping hives for several years. This year I’ve seen a pretty significant increase in the number of Small Hive Beetles. (scientific name: Aethina tumida Murray (Insecta: Coleoptera: Nitidulidae). I’m trying to break the lifecycle of the beetles with Nematodes since they leave the hive (after hatching) and then have to burrow into the ground for to pupate. Will your nematodes help control their numbers?

  30. biologiccompany on Mon, 26th Aug 2013 7:37 pm 

    Hi Heather,

    First and most importantly, the beneficial nematodes we sell are completely safe for all vertabrates. Late summer and early fall is the best time to treat for any white grub with nematodes. I would recommend our Heteromask product which contains Heterohabditis bacterophora nematodes (Hb).

    Thanks for the question,

    BioLogic Company

  31. biologiccompany on Mon, 26th Aug 2013 7:38 pm 

    Thanks for the order Ken. Keep us posted on the results.

    Kind regards,

    BioLogic Company

  32. Nancy Mende on Sun, 8th Sep 2013 2:46 pm 

    I have a fairly large vegetable garden 25 by 40 ft. When digging some of my potato crop, we found large amts of white grubs- 1 to 1 1/2 inches in size. I called our local university, URI and spoke with them. They said the amount of these Grubs were excessive! I am interested in organic control since these are in my veggie bed. Which nematodes would be effective on these and when is the ideal time to use nematodes to treat the garden and should the entire garden be treated? If so how much should be purchased , and what is the cost of you product and how to apply it. Thank you for your assistance. I rotate my crops but am concerned with planting potatoes again in the garden. Should I skip a year or two? Thank you. Nancy Mende

  33. biologiccompany on Mon, 9th Sep 2013 2:30 pm 

    Hi Nancy,

    For white grubs in your 1000 sq. ft. garden I would recommend our 25M Heteromask Spray product. It will treat over 1300 sq. ft. of white grub infested ground. I would suggest treating the whole garden if possible and doing it as soon as you can. White grubs are more susceptible to nematodes when they are young. The nematodes can be applied with a hose end spray, pressure sprayer, or even a watering can. I don\’t think skipping planting potatoes will help, since the white grubs will feed on pretty much any root system.

    Thanks for the question,

    BioLogic Company

  34. Jennifer on Mon, 16th Sep 2013 3:52 pm 

    Southeastern Florida here, and as a transplant from the north I’m seeing the effects of living in a swamp. Nothing seems to keep fleas off the dog; not fantastic food, Brewer’s Yeast with garlic; Advantage, flea baths every week — nothing. What kind of nematodes would take care of fleas, and any chance they might take care of no-see-ums, as well?

    Many thanks,

  35. biologiccompany on Mon, 16th Sep 2013 4:08 pm 

    Hi Jennifer,

    You can use either Steinernema feltiae (Scanmask) or Steinernema carpocapsae (Ecomask). While neither are great at controlling the no-see-ums or midges, Ecomask would be more likely to infect the midges. For a bad infestation of fleas you should plan on using ~35,000 per square foot. Treat the shaded areas of the lawn first and the areas that your pets and family frequent the most.

    Thanks for the question,

    BioLogic Company

  36. Mike Ohlhausen on Wed, 18th Sep 2013 10:38 am 

    I have what I think is a large garden (90′ x 120′) in South Central Texas and have had a few problems which I think nematodes will help with. Grasshoppers, Colorado Potato beetles, Squash Beetles, and June bug and Japanese Beetle grubs. They seem to be everywhere I plant anything, lol. I would hate to kill off bees and lady bugs, so I don’t want to bomb it with chemicals. What do you recomend, and how much would it take? Hey, since rabbits live in the ground, do you have any LARGE nematodes…? (just kidding, I have a BBQ, lol) Thanks-

  37. biologiccompany on Wed, 18th Sep 2013 3:18 pm 

    Hi Mike,

    Nematodes are soil dwelling organisms, so if the pest insect does not have a life stage in the ground nematodes can\’t get them. This rules out the grasshoppers (you might try NOLO for grasshoppers), Colorado potato and squash beetles. However, the June and Japanese beetles are still great hosts for the nematodes. In gardens I would suggest treating with Scanmask, about a quarter billion for that size garden. We have larger sizes at not listed on the website including a 250 million size. Give us a call and we would be happy to help you with the order. Thankfully nematodes are harmless to vertebrates so the bunnies will have to be BBQ\’ed.

    Thanks for the question,

    BioLogic Company

  38. Sue Long on Wed, 25th Sep 2013 7:52 pm 

    I have read nematodes will eleminate termites. What kind should be used for sub-terranian and airborne termites? Please send answer to :suelong306@gmail.com. Please give me a price per sq. Ft. for each. Thanks!! Sue Long

  39. Sue Long on Wed, 25th Sep 2013 7:56 pm 

    PS I live on East Coast Central Fl. Sue Long

  40. biologiccompany on Thu, 26th Sep 2013 12:50 pm 

    Hi Sue,

    Beneficial nematodes do control subterranean termites, but not drywood termites. We have a product called Termask (not on our website) that works, however they should be applied by a trained professional if you are treating an important structure like your home. If you are having trouble with termites in a raised garden bed, you can use Ecomask.

    Thanks for the question,

    BioLogic Company

  41. mike on Fri, 27th Sep 2013 8:11 pm 

    Hi I live in atlanta georgia and i have 2 dogs that like to spend their time rolling in the grass,red clay and dust in the back yard. I just spent the summer pulling thick ivy out of the ground that covered my entire back yard so a large portion of the yard has no ground cover. The yard is shaded with hardwoods and at times it is damp out there.How can I naturally kill the fleas? I don’t want to kill anything that birds feed on or subject my dogs to toxic products.Will nematodes do the job? The yard is 100′ x 100′. Thank you! Mike

  42. biologiccompany on Mon, 30th Sep 2013 11:41 pm 

    Hi Mike,

    I would suggest trying some of our larger sized Scanmask products, like the 50M Scanmask Spray. We do have larger sizes available not listed on the website that you might need if you were to treat the whole 100×100 area, but I would suggest if possible to cut out the areas in full sun as the flea larvae prefer the shaded areas typically. http://www.biologicco.com/contact-us for sizing and prices for the larger sizes.

    Thanks for your question,

    BioLogic Company

  43. Jessica binion on Wed, 2nd Oct 2013 3:33 pm 

    Hi, we are entering our rainyish season in san Antonio, tx. And we are noticing lots of ants (red and black mainly red) and what we were just told is termite mounds. I run a home daycare so I would prefer something that will not be toxic to the children and our dog. How would we apply to yard, should we remove all toys and play equipment beforehand? Also how long should we wait to walk or play outside? How often should we reapply? Lastly, is it better to purchase from Home Depot/lowes or a garden center? Thanks so much for all your help :)

  44. biologiccompany on Thu, 3rd Oct 2013 2:54 pm 

    Hi Jessica,

    Our Scanmask products work on fire ants, which you might actually have. They don\’t work on the domestic ants and only work on subterranean termites which do not make mounds. All species of beneficial nematodes we produce are not harmful to any vertebrate and have been exempted by the EPA. For the fire ant treatment you would want to mix about 1 million nematodes in 1 gallon of water and then pour it down the cone of the mound. Fire ants spread pretty quickly so the nematodes should be applied to any mound that is active. I would suggest purchasing from a garden center as opposed to a big box store. Places like Home Depot and Lowes are great for supplies, but when it comes to living perishable organisms, I would trust knowledgeable staff at a garden center over them.

    Thanks for the question,

    BioLogic Company

  45. Jeff on Thu, 10th Oct 2013 12:54 pm 

    Our back yard is approx 3000 sqft & the issue is dog fleas.
    What is the amount of beneficial nematodes We need?
    When is the best time to apply the beneficial nematodes? As it is now October

  46. biologiccompany on Fri, 11th Oct 2013 5:35 pm 

    Hi Jeff,

    We recommend 35,000/square foot especially in shaded areas of the lawn. This means to treat the entire back lawn you should purchase two 50M Scanmask Spray. With regard to the best time to treat, it depends on where your located. The fleas over winter as larvae or pupae and the larvae are most susceptible to the Scanmask nematode. However, the nematodes will only be active soil temperatures 55F and above. So if you are in zone 6 or lower, I would recommend holding off til April of next year.

    Hope this helps, and thanks for the question!

    BioLogic Company

  47. Natalie on Fri, 25th Oct 2013 5:57 pm 

    I have a tick problem. I was just told about beneficial nematodes. My question
    what type of nematodes do I buy and where can I buy them?

  48. Natalie on Fri, 25th Oct 2013 6:05 pm 

    I have one acre to cover, so how many do I need to by? I live in Florida. What do I need or what is the best way to distribute them?

  49. biologiccompany on Mon, 28th Oct 2013 3:35 pm 

    Hi Natalie,

    Unfortunately there is a lot of disinformation out there when it comes to nematodes. They have not been proven to control ticks, which is not surprising since nematodes are subterranean organisms and ticks spend the entirety of their life-cycles above ground. Fleas are controlled by nematodes because of the larval stage that is in the soil. I recommend that you beware of anyone selling nematodes claiming that they will control ticks.

    Sorry that we could not be of more help,

    BioLogic Company

  50. Helena on Tue, 5th Nov 2013 12:53 am 

    we have tried everything to get rid of our flea infestation, they appear to be resistant to all the chemicals we’ve used for treatments & just continue to multiply. Our home sits on a 1.8 acre lot and I hear your product is good at controlling the larva, but it’s November now & most of the time it’s close to freezing outside. Should I wait to treat our property till spring, then?

  51. biologiccompany on Tue, 5th Nov 2013 12:50 pm 

    Hi Helena,

    Yes, we would recommend holding off until spring when the larvae and nematodes will be active in the soil again. Nematodes can overwinter in the soil, but they would not be active until the spring. So no point in applying them yet.

    Thanks for the question,

    BioLogic Company

  52. biologiccompany on Mon, 11th Nov 2013 4:28 pm 

    Hi Cheryl,

    The nematodes will control the grub problem, and in turn control your raccoon and mole problem. I would suggest using any of our Scanmask Spray products, to treat for white grubs now.

    Thanks for the question,

    BioLogic Company

  53. Suzy Hayes on Thu, 14th Nov 2013 12:53 pm 

    We live in Northern California. Many years ago a “friend” brought me an old stump to use as a seat in my yard, I recently noticed TERMITES crawling in between bark and wood. I know the little buggers are subterranean, and I screamed @ my husband when he started to remove the stump as I didn’t want to pop open THAT “can” of termites! It’s about 15 ft from our Queen Anne Victorian! I am not interested in killing all other insects which reside in our rural yard. We LOVE the indigenous wildlife which have been here LONG before the house was build! Have any NEMATODES which only take care of TERMITES &/or suggestions?

  54. biologiccompany on Thu, 14th Nov 2013 6:48 pm 

    Hi Suzy,

    You can use beneficial nematodes for killing subterranean termites, we would recommend Ecomask around the stump. However, if it is a concern that your house is in danger, we would recommend that you first have it inspected by a professional. We do sell product specifically for termites, but it needs to be applied by a professional, as the colonies are sometimes located below the foundation. But if you want to stop the problem around the stump, apply Ecomask around the area and anywhere else that you suspect may have termites. Hope this helps, if you have anymore questions feel free to ask.

    BioLogic Company

  55. Don on Fri, 17th Jan 2014 6:50 pm 

    Have had issues with colorado potato beetles and the nematodes may be the answer. Request a bit of information of efficacy and concetration required. looking at 6-8 50′ rows so hand picking is not an option..

  56. Bankie Shealy on Fri, 24th Jan 2014 4:30 pm 

    This is my second year attempt at organic gardening (without much success). Last year, I lost many of my veggies to bugs and most of my plants were not thriving. In addition, we have a terrible mole problem. Adding to my frustration, my husband kept saying, “You need to put out 10-10-10 and Sevin!”
    This year, I saved every leaf & grass clipping and our neighbor brings me loads of manure so I started composting. I just put loads of manure & decaying leaves & grass clippings into raised beds. I also added rabbit manure which was full of red wigglers.
    My goals:
    1- Get rid of mole infestation without jeopardizing the worms.
    2- Increase red wriggler & earthworm population.
    3- Solve bug, caterpillar and fire ant problems organically.
    What products and practices do you suggest? Thanks for your help.

  57. biologiccompany on Fri, 24th Jan 2014 4:54 pm 

    Hi Bankie,

    The mole problem is actually a white grub problem. The moles come into the garden to feed on the white grubs in the soil, so if you get rid of the white grubs, they will have no reason to come into the garden. I would suggest treating the garden as soon as the soil is not frozen with one of our Scanmask products. I would also suggest treating the white grubs with a Heteromask product in late August early September. Early fall is when the white grubs are most susceptible to the beneficial nematodes.

    Beneficial nematodes are harmless to earthworms so adding more organic material to the soil will probably be the best option for increasing their population.

    Most of the other insects your probably having problems with including the fire ants are targeted by the nematodes in Scanmask.

    So in summary treat with Scanmask as soon as you can as long as the soil is not frozen and then treat again with Heteromask in the early fall. Using these two products should clear up most of your problems, avoid using chemicals, and keep your earthworm population alive and well.

    Thanks for the question,

    BioLogic Company

  58. biologiccompany on Fri, 24th Jan 2014 5:10 pm 

    Hi Don,

    In research done in the late 80\’s they achieved about 80% control of the prepupae and pupae with S. feltia (Our Scanmask product). This was done with high concentrations of nematodes (80000 nematodes/sq.ft.). That would mean you would need about 100 million nematodes to treat eight 50ft rows assuming the rows were about 3 feet wide. I would suggest treating directly after your last frost date so the number of overwintering beetles is reduced.

    Thanks for the question,

    BioLogic Company

  59. john smith on Fri, 31st Jan 2014 2:13 am 

    Anything to get rid of “chiggers”? If so, how much is needed for one acre?

  60. biologiccompany on Fri, 31st Jan 2014 7:55 pm 

    Hi John,

    Unfortunately chiggers are not controlled by beneficial nematodes. The Trombiculidae (Chiggers) are mites and are very unlikely to be infected by nematodes.

    Sorry we can’t be more helpful,

    BioLogic Company

  61. shabana on Tue, 4th Feb 2014 4:43 pm 

    I have Maggots on my Olive Tree I always had the tree indoor but I sill got maggots in them what do I do and how do I get rid of them.

  62. biologiccompany on Sat, 8th Feb 2014 6:05 pm 

    Hi Shabana,

    If the maggots are fruit fly larvae which infest olive trees regularly. There is not much from a biological standpoint you can do for fruit flies. Nematodes will not control them because the eggs are laid on the fruit, larvae develop and pupate in the fruit and then emerge. If it is a pest that has some stage of it\’s life in or on the ground nematodes might be able to help.

    Other things you can do to mitigate the problem are to destroy any fallen fruit and use sticky traps to catch the adults.

    If you can describe the maggots better we might be able to give you a better recommendation.

    Thanks for the question,

    BioLogic Company

  63. Rachel G on Tue, 18th Feb 2014 5:57 pm 

    As with the other Floridians, I have a bajillion fleas everywhere this has been a yearly issue for the past six years with the outbreak starting in November and being worst December through February. My question is which nematode would be ideal for my property. We have grass in the front and back, but around and under the house is nothing but sand which is where it is shady. Will the nematodes do well in sand? Thank you.

  64. admin on Sat, 22nd Feb 2014 6:32 pm 

    Hi Rachel,

    Thanks for the question! There are too different nematodes that work well for flea larvae, Scanmask (S. feltiae) and Ecomask (S. carpocapsae). Of the two we recommend the Ecomask products for fleas. We even have a Pet Pack specifically for fleas. The nematodes will do well in the sand, but make sure to water the areas that you treat with nematodes for the first week, since sandy areas drain very quickly you don’t want the nematodes to dry up. Concentrate on the shaded areas and anywhere your pets frequent.


    BioLogic Company

  65. Donna J. on Thu, 3rd Apr 2014 1:45 am 

    I live in Northeast Florida. I just found termites in my garden and also have problem with tons of fleas, grubs, earwigs, fire ants and several more insects I have yet to identify. My yard is about 3,000 to 4,000 square feet. As I have pets and small children playing in the yard, I want to use a product that is safe for them. Also, does this kill rollie pollies? I like having them in my compost pile and the kids love finding them. What would you recommend using and how much?

  66. biologiccompany on Sat, 5th Apr 2014 3:33 pm 

    Hi Donna,

    If you want to treat with just one product, I would recommend two units of the 50M Scanmask Spray. It will work well for the fleas, grubs, fire ants, and help with the termites. Two units should treat the whole lawn.

    Scanmask is the best all around product for the list of pests you are having problems with, however we typically recommend the Ecomask product for the fleas and termites and Heteromask for the white grubs. All of our nematode products are safe for people, pets, and plants. You might also find the Nema-Jet sprayer helpful treating the whole lawn.

    The earwigs and rollie pollies besides looking scary and ugly are basically harmless and are not controlled by nematodes. So your kids will still be able to find the rollie pollies and play biologist. Both like to feed on decaying matter, and that is probably why you find them around the compost pile. If you still want to get rid of the earwigs I would suggest confining the pile to a plastic drum.

    Thanks for the question,

    BioLogic Company

  67. Sarah on Sun, 13th Apr 2014 1:41 pm 

    I have a ton of rolly pollys that I can not get rid of. Any suggestions?

  68. Pattie on Sat, 19th Apr 2014 8:10 am 

    I love in Northeast PA and was overwhelmed with Japanese beetles last year, especially on my Rose bushes. Will a treatment with nematodes be effective now? Help! Thank you for taking the time to reply…. It will be greatly appreciated.

  69. Jason on Sun, 20th Apr 2014 9:55 pm 


    I have a grub problem in Eastern Massachusetts. This is leading to skunks turning over my lawn. I’ve got a lot that is about 4000sf. I’ve treated a small portion of the lawn with a grub pesticide but I’d much rather use a natural product. Can I still treat this spring? Is it too warm/too cold or too late in the grubs cycle? Will the grub insecticide I used kill the nematodes in those areas?


  70. Rocky on Thu, 24th Apr 2014 12:30 am 

    I am having a problem with fleas and have a little less than an acre of land, how much would I need to take care of the problem and where can I purchase the product, I live in South Texas.

  71. biologiccompany on Mon, 28th Apr 2014 11:41 pm 

    Hi Rocky,

    The best product for fleas would be our Ecomask product, but the Scanmask products can be used as well. I would recommend treating just the shaded areas of the acre and around shrubs and structures. Application rates can be seen here. I am not sure of any distributors carrying the Ecomask product, but there are many garden centers carrying our Scanmask product in Texas.

    Kind regards,

    BioLogic Company

  72. biologiccompany on Mon, 28th Apr 2014 11:42 pm 

    Hi Sarah,

    Unfortunately no, but on the bright side rolly pollys rarely cause damage to plants, they feed on decaying matter.

    Kind regards,

    BioLogic Company

  73. biologiccompany on Mon, 28th Apr 2014 11:47 pm 

    Hi Pattie,

    Nematodes work on the grub stage of the Japanese beetles, the adults might fly in from all over. However, they do typically lay their eggs close to the food source so an application of Scanmask could help reduce the number in the vicinity.

    Kind regards,

    BioLogic Company

  74. biologiccompany on Mon, 28th Apr 2014 11:50 pm 

    Hi Jason,

    You can probably still treat this spring, but the best option is to treat for grubs in late August through September. This is after the grubs hatch and are small. They don\’t do much damage at this point and are highly susceptible to nematode infection. The best product to use would be the Heteromask products in either the 25 million or 50 million size.

    Kind regards,

    BioLogic Company

  75. barb on Thu, 22nd May 2014 1:19 am 


  76. Emily on Fri, 23rd May 2014 5:05 am 


    [Sorry in advance for long winded questions]

    I’m purchasing your Ecomask products for fleas brought in by stray cats in our yard. It seemed to become a really bad infestation in a matter of days. Questions:

    1)Upon our initial freak out we applied Biospot yard spray to our property (before learning of nematodes) which hasn’t done a whole lot. Since I’ve already sprayed the yard, will this kill the nematodes as well? Other sources say insecticides have little effect on them…
    2)I live in Southern California, where it is going to be mid to upper 80s and sunny every day – how often do you suggest we water to keep the nematodes from drying up?
    3)the stray cats made a home for themselves under our house while we were on vacation – can we spray this under the house? 4) Not that you sell this, but just throwing it out there – what are your opinions on food grade diatomaceous earth for killing fleas inside the house?


  77. Gary Fabris on Wed, 28th May 2014 3:02 pm 

    I have several soil insect larvae causing considerable damage in our vegetable garden. The worst are small fly maggots that attack the roots of radishes, Cabbages and similar plants. The other is a wire worm which is a beetle larvae I beleave. What nematodes could be used to reduce the numbers of these to more acceptable levels?

  78. biologiccompany on Thu, 5th Jun 2014 3:39 pm 

    Hi Gary,

    The best product for both the root maggots and wire worms is our Scanmask products, they will also help control other pests in the garden as well.

    Thanks for the question,

    BioLogic Company

  79. biologiccompany on Thu, 5th Jun 2014 3:50 pm 

    Hi Emily,

    Sorry for the delayed answer. The nematodes should not be harmed by the active ingredients in Biospot, most of the insecticides you can purchase without a license are not harmful to nematodes unless applied at the same time. I would suggest watering as much as you can the first week, but once the nematodes have settled into the soil watering is not as critical. Yes, spray under the house if possible, some of the favorite places for fleas are under structures and decks. Diatomaceous earth in the house is pretty messy, I would recommend replacing the filter in your vacuum and vacuuming about once a day until the problem subsides. Also you may want to wash or discard your pets bedding.

    Thanks for the questions,

    BioLogic Company

  80. David Frazier on Sat, 7th Jun 2014 2:49 am 

    I am over run with fire ants. Will BN control them? If so, what kind should I order and who would I order them from? I live in South Texas and it is June, can nematodes be shipped to me safely?

  81. biologiccompany on Wed, 11th Jun 2014 11:01 pm 

    Hi David,

    Yes, beneficial nematodes can control fire ants. We recommend treating each active cone with 1 million of the Scanmask nematodes (S. feltiae). You can either order them directly from our website or from a Texas company called Green Sense. The nematodes are packed for shipping, but transit time should be no longer than 3 days.

    Thanks for the question,

    BioLogic Company

  82. biologiccompany on Wed, 11th Jun 2014 11:04 pm 

    Hi Barb,

    The best product for the sod web worm is our Ecomask Product. It can be applied anytime that the caterpillars are present in the grass. After applying it is necessary to continue watering the area so the nematodes are apply to stay close to the surface and infect the web worms.

    Thanks for the question,

    BioLogic Company

  83. Sue on Thu, 12th Jun 2014 1:15 pm 

    Hi there! We just moved into an apartment, and there are roaches! We tried getting the complex to deal with it, but their methods are ineffective. We laid out gel bait, but tons more magically appeared :( Our son is starting to get very sick (he has asthma) and we need a solution fast. I read about nematodes. Can they be applied indoors and would they get rid of our roach problem? The terminators can’t come out for another week or so!


  84. Kevin Furlonger on Wed, 18th Jun 2014 2:22 pm 


    Our neighborhood has a huge Rose Chafer problem we trap millions every year and can’t seem to get them under control!
    The soil is very sandy and is ideal for these bad boys. We use Japanese beetle traps. Our lawns are big 1-2 acres unlike there name they love our fruit trees the most.

  85. biologiccompany on Tue, 24th Jun 2014 12:50 pm 

    Hi Kevin,

    The nematodes can help with the larval stages, but not the adults which may fly in from all over the surrounding area. I would recommend treating with Heteromask in the late summer early fall if you want to control the larvae on your property. It is probably not necessary to treat the whole area to reduce the population in the immediate area. A concentrated application around the drip zone of the fruit trees would help mitigate the problem for next year. But it won\’t help with all the adults that fly in to feed on the fruit trees.

    Thanks for the question,

    BioLogic Company

  86. biologiccompany on Tue, 24th Jun 2014 12:57 pm 

    Hi Sue,

    We are testing a bait station for German cockroaches now, but do not have it to the point were it is commercially available. The best advice I can offer is to remove any and all food and water sources form the roaches. This means lots and lots of cleaning, placing your open food in sealable plastic containers, washing dishes immediately after dinner, and removing your trash daily. The problem with roaches in an apartment setting is that you can be the cleanest tenant in the world, but if your neighbors aren\’t you will always be susceptible to another outbreak. Sorry that we cannot be more of a help.

    Thanks for the question,

    BioLogic Company

  87. Lynn on Tue, 8th Jul 2014 9:49 pm 


    We live outside Madison WI, just came home from a 2 week vacation and discovered that my Iris plants have wilted, died and the roots are soft and squishy. I found a white grub in the midst of the roots, and it looked very well fed. What do you suggest using to treat this problem and can my Iris bulbs be used again?

    Thanks for your help!

  88. biologiccompany on Wed, 9th Jul 2014 2:34 pm 

    Hi Lynn,

    For the iris borer (read more here) I would recommend our 25M Ecomask Spray. Use it around the bulbs of all your iris beds and the surrounding areas.

    Thanks for the question,

    BioLogic Company

  89. Diane on Tue, 26th Aug 2014 9:23 pm 

    I live in San Diego, CA and the fleas are worse this year than ever. I just lost my Silky Terrier I believe because I used an anti-flea topical medicine on her. I have a Maltese at home and she is beginning to scratch. I think I have the inside under control but she does go out in the front where we have grass. What and how much would you recommend we do to our front yard to kill the fleas once and for all. Thank you in advance.

  90. biologiccompany on Thu, 11th Sep 2014 2:14 pm 

    Hi Diane,

    The amount of product depends on how large your front lawn is. I would recommend taking a look at this post about fleas and nematodes.

    Thanks for the question,

    BioLogic Company

  91. Stephanie Lynch on Mon, 22nd Sep 2014 3:44 am 

    Last year I noticed that something was ruining my lawn in patches. Long story short, I have been told that I have wire worms….they are slowly eating up my lawn which used to be beautiful. HELP!! I want them dead!!! and gone forever. Please provide advice on how to get rid of and how to stay rid of and when to treat. I live in Arkansas. Thanks so much for your help.

  92. biologiccompany on Mon, 22nd Sep 2014 2:11 pm 

    Hi Stephanie,

    Wireworms tend to be a common pest of root crops like potatoes, but they will feed on pretty much any tender root system including grass roots. The best nematode product to use for wireworms is our Scanmask product. I would recommend treating with one of the sprayable Scanmask products at about 35,000/square foot. You can treat anytime that the soil is not frozen and there are larvae in the soil. Treating this fall and then in mid spring checking for wireworms beneath the damaged turf. If you spot more than 2 or 3 in a square foot I would suggest treating again.

    Hope this helps,

    BioLogic Company

  93. Martin Rosen on Mon, 13th Oct 2014 8:05 am 

    Our Bonsai study group is considering using Scanmask to help control various insects that infest our trees. We are located in the Tampa area zone 9 so our summers are long,winters are mild. We would like to limit our use of pesticides etc and keep as organic as possible. Are there any long term issues?
    Thank you for your help,
    Marty Rosen
    Southwest Florida Bonsai study Symposium

  94. biologiccompany on Mon, 20th Oct 2014 1:11 pm 

    Hi Martin,

    There are no long term issues with our beneficial nematodes. They are exclusively insect pathogenic so they are safe for people, pets and plants.

    Thanks for the question,

    BioLogic Company

  95. Joy T Makon on Sat, 25th Oct 2014 2:29 pm 

    Is mid November too late to apply nematodes for a grub problem in Brooklyn? Or should I wait until spring?

  96. vicki snedeker on Mon, 27th Oct 2014 2:24 am 

    I have a cat that goes outside for a few hrs. a day. he has brought fleas indoors. canI use the nematodes ti get rid of them and how.

  97. Tom VanOstrand on Tue, 28th Oct 2014 1:40 pm 

    We have a pretty serious flea problem, and it appears to be coming from our back yard, which has a lot of large shade trees. It sounds like I need a product like Scanmask or Ecomask, but my concern is application. The shaded areas of our yard are covered with leaves and pine straw, so I’m not sure how we can apply the product so that it gets down into the soil. Any advice? Thanks very much for your help.

  98. Brenda Danks on Fri, 31st Oct 2014 1:24 am 

    hi! Wow just read all of these comments and now need to know how to economically treat 100+ fire ant beds. My 5 acres are covered. I’ve tried chemicals, get the treated bed, but they just relocate. I see I need 1 million Scanmask nematodes per mound. . .WOW. Tell me how to do this. Seems unrealistic to drag around gallon buckets all over the area.

    I have also read that dry molasses is a beneficial way to treat (20#/sq.ft.). Would this cut down the nematode numbers??

    I do appreciate you help. BD

  99. biologiccompany on Sat, 1st Nov 2014 2:55 pm 

    Hi Vicki,

    You can only use nematodes outdoors because they are soil dwelling organisms. However, after you get rid of them from inside, you will want to get rid of the source of the fleas that are outside. I would recommend you take a look at our post on fleas, here.

    Thanks for the question,

    BioLogic Company

  100. biologiccompany on Sat, 1st Nov 2014 2:58 pm 

    Hi Joy,

    Yes, it is too late for this year. I would recommend treating it early in the spring when temperatures start warming up and possibly again in late August or early September.

    Thanks for the question,

    BioLogic Company

  101. biologiccompany on Sat, 1st Nov 2014 3:03 pm 

    Hi Tom,

    I would recommend the Ecomask product for the flea problem. Our pet pack bundles our sprayer with the nematodes for ease of application, check it out here. The nematodes will be fine applied to the areas that are covered by leaves and pine needles. I would just suggest after your nematodes are applied that you should go over these areas a little heavier with water to make sure the nematodes are rinsed below them.

    Thanks for your questions,

    BioLogic Company

  102. biologiccompany on Sat, 1st Nov 2014 3:11 pm 

    Hi Brenda,

    Unfortunately we are not familiar with the dry molasses treatment or if there is any synergistic effect with nematodes. I might suggest using a pull behind tank for a riding mower, but there really isn\’t a good way to avoid the large quantities of water needed to keep the nematodes active in the ant hills.

    Thanks for the question,

    BioLogic Company

  103. Maji Crocco on Sun, 7th Dec 2014 2:24 pm 

    I had my old fungus-infected pecan examined by an arborist who said that ganoderma can’t be treated but I could try putting a lot of corn meal on the fungus to attract nematodes. I was surprised because I thought that nematodes were used only to treat animals.

    Is there a type of beneficial nematode that I can buy to deal with this problem?

  104. biologiccompany on Mon, 8th Dec 2014 2:14 pm 

    Hi Maji,

    Unfortunately ganoderma is a problem that can\’t be corrected. The nematodes we sell are insect pathogenic, so they will not help with a fungus related problem.

    Sorry we can\’t be more helpful,

    BioLogic Company

  105. Judyie on Sun, 21st Dec 2014 1:30 pm 

    Hi, been reading over your website and many others about nematodes for several days now. We have a flea infestation and live in Miami. We have three indoor cats and one dog. It seems the dog keeps bringing the fleas in and sharing them with the cats ! I see that your flea package has the nematodes that are recommended for a cooler climate, not a warm climate so I’m hesitant to order that. We also have several rent red ant hills on our property as well, both in the grass/soil in the backyard and now they are appearing to be under the pavers in the front driveway evidenced by the little mounds of dirt and sand that they pushed up when borrowing through their pathways. We live on a builders Half-acre. Was wondering if perhaps I should order both types of the nematodes? Thank you. Happy holidays.

  106. Donna on Sun, 11th Jan 2015 6:25 pm 

    so I live on a acre and a half at the lake with lots of tree and squirrels, It is January so when is the best time to treat my yard for fleas and how much, my 4 dogs would lick you to death with appreciation

  107. biologiccompany on Wed, 28th Jan 2015 5:53 pm 

    Hi Judyie,

    The nematodes in the Pet Pack are Steinernema carpocapsae and are found as far north as Canada and as far south as Southern Mexico. They should do just fine in Florida. The Scanmask product works well on fire ants, but not on any other type of ants.

    Thanks for the questions,

    BioLogic Company

  108. biologiccompany on Wed, 28th Jan 2015 5:56 pm 

    Hi Donna,

    I would wait until spring to treat with our Ecomask products or a Pet pack. 4-5 packs of the 50M Ecomask spray should treat the entire area. Feel free to contact us if you have any other questions.


    BioLogic Company

  109. Deanna on Mon, 9th Feb 2015 5:47 pm 

    Hello, I have been looking for ways to treat a fungus gnat problem in my vivarium. I would like to use nematodes to control the gnats but in the future I would like to add some earthworms; for the plant and soil health. My question is will the nematodes also kill other worms? Should I just save my money and forget about adding earthworms after treating the area with the nematodes? Thanks for the advice.

  110. Donna on Mon, 2nd Mar 2015 6:10 pm 

    I have about 1/4 acre yard in Central Florida. We currently have a mole cricket infestation. Do you have a nematode for that? How would you treat it?

  111. biologiccompany on Mon, 2nd Mar 2015 7:36 pm 

    Hi Donna,

    Our Ecomask product can be used to control mole crickets. I would recommend treating that area with at least 150 million. You might also find our Nema-Jet Sprayer useful for treating.

    Thanks for the question,

    BioLogic Company

  112. biologiccompany on Mon, 2nd Mar 2015 7:44 pm 

    Hi Deanna,

    Our beneficial nematodes have no effect on earthworms, in fact earthworms will ingest and digest nematodes. I wouldn\’t worry about mixing them the nematodes have no effect on the earthworms and the earthworms will have little effect on the number of nematodes.

    Thanks for the question,

    BioLogic Company

  113. christon on Wed, 4th Mar 2015 1:23 pm 

    does this product work on drywood termites?

  114. biologiccompany on Tue, 10th Mar 2015 8:28 pm 

    Hi Christon,

    Unfortunately the nematodes are only good against subterranean termites.

    Thanks for the questions,

    BioLogic Company

  115. Nancy on Thu, 12th Mar 2015 5:20 pm 

    I live in north central texas and yearly the grasshoppers eat all our plants, tried nematodes and Nolo but it was after they hatched and had begun their feast early summer. We have a large yard, almost 2 acres and live in the country. What would be most ecnomical and effetive treatment?

  116. biologiccompany on Fri, 13th Mar 2015 3:55 pm 

    Hi Nancy,

    Unfortunately nematodes will not help with grasshoppers. The best no chemical alternative we know of is the Nolo bait.

    Thanks for the question,


  117. jackie on Tue, 17th Mar 2015 6:07 pm 

    I have noticed several grubs in my yard, south east Ga. it is March 17 2015 is it too late to spray my yard and what do you suggest if it isn.t too late

  118. biologiccompany on Fri, 20th Mar 2015 1:58 pm 

    Hi Jackie,

    I would recommend holding off until late August or early September and treating with Heteromask then. The grubs are freshly hatched then and more susceptible to nematode infection.

    Thanks for the question,

    BioLogic Company

  119. Wendy on Wed, 25th Mar 2015 4:28 pm 

    Hi I live in southern SC (low country) and I have seen many termites in the soil in my garden. The house is treated so they are not near the house. I read that nematodes kill termites, subterranean termites.

  120. Capricia Breedlove on Sat, 28th Mar 2015 3:54 pm 

    How do I use nematodes to get rid of termites. I live in east central MS

  121. biologiccompany on Sat, 28th Mar 2015 7:07 pm 

    Hi Wendy,

    You are correct that nematodes will control subterranean termites for control around houses and structures I would recommend consulting a professional about the application of nematodes. However, if you are treating your garden I would recommend our Ecomask products. The 25M Ecomask Spray product should be enough to treat a large garden.

    Thanks for the question,

    BioLogic Company

  122. biologiccompany on Sat, 28th Mar 2015 7:10 pm 

    Hi Capricia,

    If you are treating a house or a structure I would recommend contacting a professional about treating with our Termask product. If you are treating a garden I would recommend our Ecomask product. Apply liberally to the garden and around the perimeter of a raised bed.

    Thanks for the question,

    BioLogic Company

  123. david mcneese on Tue, 31st Mar 2015 3:18 pm 

    We have several cabins in the mountains of northern New Mexico. The elevation is over 8000 feet. P these cabins are surrounded by approx 1/2 acre of grass.

    We have a huge cluster fly problem. I have read several articles about using beneficial nematodes. I have several questions. First of all, what would be the best product to use? How big of an area do we need to treat? I have seen the comments that indicate the area should be treated every two weeks, how often do we need to reapply? How long after the receipt of the nematodes do they need to be applied? What would be the best time of year to apply them? Thanks!

  124. Megan Smitley on Tue, 31st Mar 2015 8:24 pm 

    I am wanting to treat my yard for fleas, I live in Southern Indiana where weather is unpredictable. We can have all 4 seasons in less than a week. What would be best to use, and do I use it effectively? Would nematodes be affected by any chemicals used in the yard for mosquitoes? I have no standing water in my yard, but have vacant houses nearby that do and they tend to get in my yard.

    Thank you!!

  125. Arnold Davenport on Fri, 3rd Apr 2015 6:04 pm 

    I have White Grubs and Borers in the Dogwoods & Rhododendrons (something has been messing up The Holly Trees too). What Nematode should I apply? and Is there a single best nematode to use for both the Lawns, Shrubs, and Gardens?

    Additionally I’d definitely like to quell the problems with Mosquitoes and Gnats.

  126. Arnold Davenport on Fri, 3rd Apr 2015 6:05 pm 

    How will Milky Spore work with Nematodes?

  127. biologiccompany on Sun, 5th Apr 2015 5:19 pm 

    Hi Arnold,

    Milky spore only controls japanese beetle larvae, while nematodes infect and kill all types of scarab beetle larvae.

    Thanks for the question,

    BioLogic Company

  128. biologiccompany on Sun, 5th Apr 2015 5:32 pm 

    Hi Arnold,

    If I was to recommend one nematode I would recommend our Scanmask product for grubs, weevils, and borers. Unfortunately there are no nematodes commercially available to control mosquitoes or blood feeding gnats.

    Thanks for the question,

    BioLogic Company

  129. biologiccompany on Sun, 5th Apr 2015 5:57 pm 

    Hi Megan,

    We would recommend our Ecomask product for fleas which can be applied anytime the soil is not frozen and are very effective. Almost any chemical product you can buy without a license can be used with nematodes, however, we don\’t recommend treating with both at the same time. It is best to leave about a week long window in between treatments.

    Thanks for the question,

    BioLogic Company

  130. biologiccompany on Sun, 5th Apr 2015 6:01 pm 

    Hi David,

    Nematodes have been shown to control cluster fly maggots in the lab, but we don\’t know of any successful field trials, so it is not a pest that we recommend nematodes for.

    Sorry we can\’t be more helpful,

    BioLogic Company

  131. Lane In Ohio on Mon, 6th Apr 2015 10:43 pm 


    Are your products reliable in treatment of Plum Curculio?
    Are these nematodes likely to cause damage to spider or bee populations?
    Is there any chance of these nematodes causing harm to humans or pets?

    Thank you in advance for your answers.

  132. biologiccompany on Tue, 7th Apr 2015 5:27 pm 

    Hi Lane,

    The Scanmask and Ecomask products are somewhat effective against the plum curculio. We are currently testing a product for plum curculio and hope to release it in 2016. Nematodes have very little effect on spider populations and none on bee populations.

    Sorry we can\’t be more helpful this year, but check back with us next year!

    BioLogic Company

  133. susan tow on Tue, 28th Apr 2015 12:18 am 

    Hi, Someone suggest to me Nematodes kill termites. my back yard have termites . I’m willing to give it a try on my lawn & vegetable garden before I use chemical. what type and how much do I need.

    Thanks Susan

  134. biologiccompany on Wed, 29th Apr 2015 5:33 pm 

    Hi Susan,

    I would recommend treating your raised bed with Ecomask. The 25M Ecomask spray will treat over 700 square feet. I would recommend extending the treatment beyond the raised bed as well.

    Thanks for the question,

    BioLogic Company

  135. susan tow on Thu, 30th Apr 2015 5:07 pm 

    Hi, how about combine Ecomask and Nematodes to apply in around my vegetable garden where I seen termites. Ecomask is it some kind chemical is it safe for vegetable it’s for human consumption.

    Thanks Susan

  136. biologiccompany on Thu, 14th May 2015 12:42 pm 

    Hi Susan,

    The Ecomask products are nematodes and completely safe for people, pets, and plants. It is the S. carpocapsae nematode.

    Kind regards,

    BioLogic Company

  137. Corinne Page on Fri, 22nd May 2015 2:40 pm 

    I am interested in spraying the Ecomask in my yard for fleas. My concern is whether our chlorinated water will kill the nematodes.

  138. steve on Tue, 26th May 2015 8:36 pm 

    I have a terrible ant problems in my yard, and I want to prevent against ticks as well, which we heard was going to be a bad season for them this year. We have about a 1300 sq foot yard, front and back. What would be your recommendation, product and volume?



  139. Renae on Thu, 28th May 2015 1:25 pm 

    I live in New Orleans and just noticed a couple of open tracks with little worms coming out IN MY CLOSET. My husband said they are termites. What can I use that is safe?

  140. biologiccompany on Thu, 28th May 2015 3:54 pm 

    Hi Corinne,

    The chlorinated water will not harm the nematodes. You can use any cold potable water.

    Thanks for the question,

    BioLogic Company

  141. biologiccompany on Thu, 28th May 2015 3:55 pm 

    Hi Renae,

    I would recommend talking to a professional. Nematodes will only work on subterranean termites.

    Thanks for the question,

    BioLogic Company

  142. biologiccompany on Thu, 28th May 2015 3:58 pm 

    Hi Steve,

    It depends on the type of ant. If they are fire ants I would recommend our Scanmask products. 1 million are needed per colony. Nematodes will kill ticks in lab conditions, but this has never been translated in field experiments, so we do not recommend nematodes for ticks.

    Thanks for the questions,

    BioLogic Company

  143. Penny on Thu, 4th Jun 2015 6:29 pm 

    I was told that beneficial nematodes would help reduce the tick population. Is that true? I live in New Hampshire.

  144. Marsha on Fri, 5th Jun 2015 5:14 am 


    I have just received my package of the HB Nematodes dropped However, I am a bit concerned with it as it has a rancid smell and am wondering is it suppose to smell bad? Are they still alive or dead as the package was hot? The cool pack it came with was warm. The nematodes on the sponge it came on were a creamy tan color and I am not sure what they are supposed to look or smell like. Hope I didn’t just burn money for dead nematodes


  145. Marsha on Fri, 5th Jun 2015 1:45 pm 

    BTW the HB package came from another company.

  146. wendy schlegel on Thu, 11th Jun 2015 1:33 am 

    Do not know if this question has
    been asked yet. However, i have a lemon tree in a large pot. Usually it is beautiful and even will produce being located in mass.
    This year the leaves are sticky and small white furry bugs on tne underside leaves. I know the nematodes will not take of the bugs on the leaves, but i do believe there are some sort of bugs in the the soil and would like to treat the soil to see if it helps the tree. What would be the best product to purchase? Thank you so much

  147. Nick S. on Sun, 21st Jun 2015 8:21 pm 

    Hello – I have a severe root maggot infestation in a small collection of raised garden beds, the root systems are all covered in crawly rice-sized white bugs! Which of your products would be recommended to treat the soil so I can get a mid-summer planting in?

    Thanks – Nick

  148. biologiccompany on Tue, 23rd Jun 2015 2:35 pm 

    Hi Penny,

    There has never been and successful field experiments that show nematodes as an effective control of ticks. Unfortunately some nematode distributors still claim that they do based on lab experiments where the nematodes are applied directly to the ticks.

    Thanks for the question,

    BioLogic Company

  149. biologiccompany on Tue, 23rd Jun 2015 2:38 pm 

    Hi Marsha,

    The rancid smell is typical of dead nematodes I would ask for a refund from the company you purchased the nematodes from.

    Thanks for the questions,

    BioLogic Company

  150. biologiccompany on Tue, 23rd Jun 2015 2:41 pm 

    Hi Wendy,

    It sounds like you have mealy bugs, but it is hard to say for certain without seeing them. Unfortunately nematodes will not help with mealy bugs, you might try an insecticidal soap or a type of ladybug called the mealybug destroyer.

    Thanks for the question,

    BioLogic Company

  151. biologiccompany on Tue, 23rd Jun 2015 2:43 pm 

    Hi Nick,

    Yes, you can still apply. We would recommend the 10M or 25M Scanmask Spray products.

    Thanks for the question,

    BioLogic Company

  152. Mary on Wed, 1st Jul 2015 1:20 pm 


    Lately, I noticed that my organic garden has been infested with lots of ants. I tried to kill it with orange oil and soapy water but they kept popping up all over the garden. And my flower bed also has ants, army worm, pill bugs and root maggots. I noticed some slugs,lawn moths and tiny gnats on my lawn.
    What would you recommend to treat the soil and lawn? I live in Utah.

    Thank you so much,


  153. Claudie Shelton on Thu, 2nd Jul 2015 3:48 pm 

    I live in Central Texas, have a vacant flea infested house on my property. Can I put the nematodes inside and outside the house to get rid of the fleas? And which are best for our hot weather? Also have a concern about proper packaging after reading some of the comments.

  154. biologiccompany on Fri, 3rd Jul 2015 1:31 pm 

    Hi Claudie,

    Unfortunately the nematodes can not be applied indoors. Nematodes are soil dwelling organisms that attack the larval and pupal stages of the fleas, but need a cryptic environment like soil to live. The nematodes ship 2 day UPS in a insulated box with ice and are guaranteed to arrive alive.

    Thanks for the question,

    BioLogic Company

  155. biologiccompany on Fri, 3rd Jul 2015 1:35 pm 

    Hi Mary,

    We do not recommend nematodes for control of ants other than fire ants. However, they will control army worms and root maggots. We would recommend our Scanmask product at an application rate of at least 13,000/square foot.

    Thanks for the question,

    BioLogic Company

  156. Alyssa on Fri, 11th Sep 2015 3:16 am 

    Hi there! I have a Vegetable garden that is infested with grub worms. I bought some scan mask hb nematodes and was going use them in my garden but someone in the garden center at homedepot said not to because they will destroy my tomatoes, strawberries and other veggies/fruits. Is this true? Or is it just a certain kind of nematode that does that? Thank you!

  157. Anne on Sat, 12th Sep 2015 6:35 am 

    I used the HB nematodes on several ant hills but have not seen any decreased activity in ants. How long do I have to wait before I see results?

  158. Cheryl Little on Thu, 24th Sep 2015 11:21 pm 

    Would it be better to buy both types of nematodes for adult fleas and for the larva.

  159. Robynn on Sat, 3rd Oct 2015 4:47 am 

    I have the dread lily beetles. They have decimated my hostas, my lilies, and ever other thing planted in the bed. What do you have to knock it out? Also is there a nemotode that will kill slugs? I find piles of them under the soil.

  160. Robynn on Sat, 3rd Oct 2015 4:53 am 

    Sorry I forgot to mention along with the lily beetles (and slugs) the yard is infested with cat fleas.

  161. Joanne on Mon, 23rd Nov 2015 8:08 pm 

    Nematodes for termites? I’m in FL.

  162. admin on Tue, 24th Nov 2015 12:37 pm 

    Yes, our Ecomask product is effective against termites. However, if the termite infestation is in a house or building we recommend professional treatment since the termites can be under the foundation.

    Thanks for your question!
    BioLogic Company

  163. admin on Fri, 27th Nov 2015 2:00 pm 

    There are many types of nematodes, and they were likely referring to root knot nematodes. While some nematodes are plant parasitic, ours are insect pathogenic and completely safe for people, plants and pets! The HB nematodes you purchased from BioLogic will not harm your plants and are a great, natural control for grubs.

    Thanks for your questions!
    BioLogic Company

  164. admin on Fri, 27th Nov 2015 2:03 pm 

    We recommend Steinernema feltiae (the nematode in our Scanmask products) for the control of fire ants. HB nematodes are not recommended for fire ants. Fire ants are the only species of ants controlled by beneficial nematodes (again, the Steinernema feltiae species).

    Thank you for your questions!
    BioLogic Company

  165. admin on Fri, 27th Nov 2015 2:10 pm 

    Ecomask (Steinernema carpocapsae) is the recommended product for flea larva control, but Scanmask (Steinernema feltiae) will also provide control of flea larva. You do not need to apply both types of nematodes for effective control of the flea larva. Neither product will control adult fleas, but you should notice a significant decrease in adult fleas a few weeks after nematode application.

    Thank you for your questions!
    BioLogic Company

  166. admin on Fri, 27th Nov 2015 9:09 pm 

    There is no research to support the effectiveness of nematodes against lily beetles, but since they do pupate in the soil you could certainly try to treat with beneficial nematodes (like those in Scanmask products). Some individuals have claimed they are effective. Beneficial nematodes are very effective against fleas, and we recommend Steinernema carpocapsae, which is the species in our Ecomask products. There are some beneficial nematodes that have shown to be effective against slugs, but they are not yet commercially available in the US.

    Thank you for your questions!
    BioLogic Company

  167. daniel on Mon, 21st Dec 2015 6:25 am 

    hello, my question is, do nematodes target root aphids? adults and larveae? how many BN should be used in a 5 gallon pot? thanks for any info

  168. admin on Mon, 21st Dec 2015 5:08 pm 

    There has not been conclusive research regarding the effectiveness of beneficial nematodes against root aphids. However, nematodes are usually effective against more soft bodied, soil dwelling pests so they may be an effective control. If you want to give it a try, we would recommend 30,000 nematodes/square foot (with a 5 gallon pot being slightly under 1 square foot in surface area). So, 5M nematodes would protect a lot of 5 gallon pots!

    Thanks for your inquiry,
    BioLogic Company

  169. Morella on Mon, 11th Jan 2016 2:33 pm 

    Hi: I have problems with fleas. By reading the posts here I now know what to get. I have 2 questions. Do I need to treat the 1/4 acre of land I have or treating certain areas will be enough? My second question is how often do I need to treat? I’m in South Carolina and right now our temperatures are 24f for lows and 52 for highs and I’m still having flea problems. Thank you!

  170. admin on Mon, 11th Jan 2016 11:46 pm 

    We generally recommend treating areas near buildings, in the shade (to include under decks) and wherever your pet(s) frequent. You do not typically need to treat open areas that have full sun exposure. Beneficial nematodes usually survive in populations large enough to control fleas for 1-2 years, so you do not need to treat again until you see a resurgence of the pest population. You can treat anytime the soil is not frozen, but try to avoid treating right before a hard frost.

    Hope that helps and feel free to contact us with any additional questions!
    BioLogic Company

  171. Tom Charlton on Wed, 27th Jan 2016 9:55 pm 

    I was told many years ago by a friend that he would inject nematodes into the stems of the squash vines.
    Vine borers have been killing my zucchini and yellow squash plants every year long before they would be done bearing. Would your nematodes help?

  172. admin on Thu, 28th Jan 2016 11:28 pm 

    Yes, your friend is correct. You can successfully treat using our Scanmask nematodes through injection.

    BioLogic Company

  173. Silvia on Wed, 17th Feb 2016 9:05 pm 

    I need nematodes to kill fleas in my yard. What are the right kind for that? And can I treat my yard in winter now without killing them? I need to get rid of fleas now!!
    Thank you

  174. admin on Mon, 22nd Feb 2016 2:08 pm 

    Ecomask is our recommended product for fleas. You can treat as long as the soil is not frozen, so depending on where you live you may or may not need to wait a bit.
    Thanks for the inquiry!
    BioLogic Company

  175. Leslie on Sat, 27th Feb 2016 9:01 pm 

    Hi there,

    How long will this keep grubs away for? Milky Spore says once the product is successful grubs will stay away for 10-15 years. Is this similar or will it need to be applied each season.

  176. admin on Tue, 1st Mar 2016 12:14 pm 

    Our Scanmask nematodes are typically effective control for 1-3 years. Scanmask controls all types of white grubs, not just the Japanese beetle larvae like Milky Spore.

    Thanks for the inquiry!
    BioLogic Company

  177. Chris on Thu, 10th Mar 2016 10:23 pm 

    I have subterranean termites in the wood floor under my bathroom. Do you have a recomendation?

  178. Jason Vogel on Sun, 13th Mar 2016 9:46 pm 

    I want to use nematodes to control a grub problem in my lawn. I believe they are Japanese beetles. They emerged about three years after we installed the turf. What kind of nematode should I buy and what application rate? My lawn is about 450-500 sq ft. Also, I live in Colorado, and I know temperature can be a significant issue for both when the grubs become active and probably for survival of the nematode. Do you have suggestions for species or application timing? And finally, how should I apply given that about 1/2 of my lawn is more or less dead and the other half is damaged, but still viable.

    Thank you!

  179. admin on Mon, 14th Mar 2016 3:31 pm 

    Though beneficial nematodes do control subterranean termites, we recommend using a professional pest control company when dealing with a house infestation since application can be difficult as the termites could be beneath the foundation.

    BioLogic Company

  180. admin on Mon, 14th Mar 2016 3:54 pm 

    Our Heteromask product is best for white grubs. Application in late summer/early fall is best because that is when the young grubs are most susceptible to the nematodes. However, you usually have a window in early spring to apply as well. You can apply as soon as the soil is no longer frozen. We recommend an application rate of 19,000 nematodes per square foot for white grubs. Since it sounds like you have a pretty bad infestation we would recommend treating the entire lawn heavily (1, 25 million size of Heteromask should be plenty to treat the entire lawn).

    BioLogic Company

  181. Robert on Fri, 25th Mar 2016 5:06 am 

    Will nematodes take care of my ant problem at my mobile home? These are your black ants mostly, though there seem to be others.

  182. admin on Mon, 28th Mar 2016 3:11 pm 

    No, beneficial nematodes are only an effective control for fire ants.

    Thanks for the inquiry!
    BioLogic Company

  183. Wendy on Thu, 7th Apr 2016 1:56 am 

    I have an acre and a half that is infested with the white grubs. How much of this product is required to get rid of these pests?

    Thank yo

  184. admin on Thu, 7th Apr 2016 12:09 pm 

    We recommend Heteromask for white grubs at an application rate of 19,000 nematodes per square foot. You can concentrate application on areas of the lawn that appear to have grub damage (brown spots) rather than treating the entire acre and a half to make treatment more economical.

    Hope that helps and thanks for the inquiry!
    BioLogic Company

  185. Woodie on Mon, 11th Apr 2016 4:35 pm 

    Will beneficial nematodes work on mole cricket

  186. admin on Tue, 12th Apr 2016 10:24 pm 

    For mole crickets we recommend our Ecomask product.

    Thanks for the inquiry!
    BioLogic Company

  187. Leslie on Sat, 23rd Apr 2016 10:50 am 

    I live in northeast Ohio. I have an acre of beautiful property and have a large vegetable garden and some flower gardens within that acre. I also have some fruit trees. My problem is Japanese Beetles. Last season it seemed I had an infestation. The were all over my flowers and even killed my small new cherry tree. Help! I considered milky spore in the early fall but didn’t follow through with it because it seemed to cost so much. I have 40,000 square feet of lawn. Can you guide me to a product that is effective as well as cost efficient? I dread the thought of the beetles this year. Thank you.

  188. Janean Lonsdorf on Mon, 25th Apr 2016 12:40 am 

    Can nematodes be applied succesfully to an area around a bush that has been treated with pesticide/fungicide? Is there a “waiting” period?

  189. admin on Mon, 25th Apr 2016 2:44 pm 

    Please see our website for compatibility information. Under “Directions and Safety” click on “Compatibility” for more information.

    Thanks for the inquiry!
    BioLogic Company

  190. admin on Mon, 25th Apr 2016 3:32 pm 

    For such a large area to treat, most natural treatments are going to be fairly expensive. Beneficial nematodes will likely be as expensive as milky spore, though nematodes treat all varieties of white grub whereas milky spore only treat Japanese Beetle grub. Our recommended product for white grubs is Heteromask, and we recommend you apply in early spring or late summer/early fall when the grubs are most susceptible to nematodes.

    Thanks for the inquiry,
    BioLogic Company

  191. Jack Stensgaard on Mon, 2nd May 2016 8:24 pm 

    I couldn’t find anyone here asking about flea beetles. My Kale in particular is getting eaten. What do you think?

  192. admin on Wed, 4th May 2016 6:00 pm 

    Flea beetles do like kale, and nematodes are an effective control for flea beetles. We would recommend treating with Scanmask at an application rate of 35,000 nematodes per square foot. Flea beetles overwinter as adults though, so it may take longer than other pests to see a significant reduction (since the nematodes do not kill the adults).

    Thanks for the inquiry!
    BioLogic Company

  193. Edward on Sat, 7th May 2016 3:01 am 

    I have an apricot tree I planted two years ago. I noticed the jelly substance at the base of the trunk and am assuming I have a peach tree borer. What will I need nematode wise and will I be able to save the tree? I have two 7 year old peach trees in my yard that I don’t want these to spread to.

  194. admin on Sun, 8th May 2016 6:47 pm 

    A 10 Million size Scanmask should be more than enough. Mix the Scanmask with about a gallon of water in a pump sprayer. Put the nozzle right into the hole so you can spray directly into the bore holes, and then plug the holes with some type of wax. You can then use the remainder in the drip zone around the tree(s).

    I hope that helps. Thanks for the inquiry!
    BioLogic Company

  195. Heather on Fri, 13th May 2016 9:40 pm 

    New to the nematode approach. Excited to try it, BUT am wondering if there will be a consequence to them if our city sprays weekly for mosquitoes (drive-by fumigation. ugh).

  196. scott on Fri, 13th May 2016 10:26 pm 

    I just found a termite nest on my property. What can I use to kill this nest?

  197. admin on Sat, 14th May 2016 7:56 pm 

    Nematodes are only effective against subterranean termites. For subterranean termites we recommend Ecomask.

    Thanks for the inquiry!
    BioLogic Company

  198. admin on Sat, 14th May 2016 7:58 pm 

    We are glad you are excited! No, that shouldn’t harm the nematodes. They will be pretty well protected in the soil and most insecticides do not harm nematodes.

    Thank you for the inquiry!
    BioLogic Company

  199. Pius Subil on Thu, 19th May 2016 2:28 am 

    I am from Sabah, Malaysia. My plants and veg are not healthy. I suspect snails and other pests. Our climate is so hot except in the night. Can the products you are promoting be of any use in my country?

  200. Judy on Fri, 20th May 2016 2:25 pm 

    Do you know of anything natural anywhere that will help with chiggers, whether repelling them from people, killing them, or getting them to move out of the yard? We keep having to spend the summers indoors because they’re so bad. Thanks for any help you can give!

  201. admin on Mon, 23rd May 2016 10:25 am 

    Unfortunately we only sell to the US and to Canada as of now.

    Thanks for the inquiry!
    BioLogic Company

  202. admin on Mon, 23rd May 2016 10:25 am 

    No, unfortunately nematodes are not an effective control for chiggers.

    Thanks for the inquiry!
    BioLogic Company

  203. Katie Faulkner on Fri, 27th May 2016 12:17 pm 

    I have a horrible problem with Cucumber beetles. I know the lay their eggs in the soil. Will this help? I may get 5 good cucs then my plants are decimated. They then move to my zucchini. I have tried EVERYTHING! I’m not even sure I’m putting cucs in this year :(

  204. Isabella on Fri, 27th May 2016 10:57 pm 

    Will nematodes help with root aphids or any kind of aphids at all?

  205. admin on Sat, 28th May 2016 11:22 am 

    Yes, we would recommend Scanmask for root aphids.

    Thanks for the inquiry!
    BioLogic Company

  206. admin on Sat, 28th May 2016 11:26 am 

    Yes, Scanmask will control cucumber beetles. You can apply now and the nematodes will hunt down and kill the cucumber beetle larvae when the eggs hatch.

    Thank you for the inquiry!
    BioLogic Company

  207. lois nowlin on Sun, 29th May 2016 10:16 am 

    I live in southwest Va and we have two acres of ants. I love flowers and gardening and everywhere I dig I run into ants. The ones that really get to me are the microscopic black ones that take over my counter in the summer. Please help me as I am going ant crazy. I try not to use any chemicals.

  208. admin on Tue, 31st May 2016 12:49 pm 

    The only ants which nematodes control are fire ants.

    I’m sorry but thank you for the inquiry!
    BioLogic Company

  209. Christopher on Tue, 31st May 2016 2:37 pm 

    I have 2 acres of land next to a similar sizes wooded area. My neighbor also started clearing some of his tree line. Ticks have become a real problem for us. What would you recommend to help end this problem?

  210. Allison on Wed, 1st Jun 2016 11:48 am 

    I live on Long Island and as soon as the weather gets hot, I get earwigs and sugar ants(both outside and inside the house). This year for the first time, I’m getting stink bugs. What product can be used to treat?

    Thanks so much.

  211. admin on Wed, 1st Jun 2016 12:27 pm 

    Although nematodes have been shown to be an effective control for ticks in the lab setting, there are no field studies to support them as a good control. So, we do not recommend nematodes for tick control.

    Thanks for the inquiry,
    BioLogic Company

  212. admin on Wed, 1st Jun 2016 4:23 pm 

    Unfortunately nematodes are not an effective control for earwigs, sugar ants or stink bugs. Nematodes work on insect pests with a life cycle in the soil (e.g. white grubs, fleas, flea beetles, etc…)

    Thanks for the inquiry!
    BioLogic Company

  213. DEBRA MORRISI on Sat, 4th Jun 2016 8:01 pm 

    I am a veteran and live about 20 miles south of San Jose California and take cats from veterans that have to give them and rescue cats. I have a horrible flea problem under two of the houses and two of the barns. Can you help?

  214. admin on Sun, 5th Jun 2016 10:06 am 

    Beneficial nematodes kill flea larvae in the soil, and are a great way to control fleas. We recommend treating your yard with our Ecomask product. You can focus treatment on the area near the buildings and shady areas, which fleas prefer.

    Thank you for the inquiry!
    BioLogic Company

  215. Becky on Mon, 6th Jun 2016 4:44 pm 

    Hi I have had lots of trouble with seed maggots this spring – they got many of my seed crops. Now I’m also noticing wireworms eating my seedlings etc. I’m wondering if nematodes would help and what kind? Thanks!

  216. admin on Tue, 7th Jun 2016 11:22 am 

    Scanmask is a good control for wireworms. Scanmask is also currently being tested by a few different organic farms as a seed maggot control. We don’t have the results yet, but that would be the product we would recommend as a potential control.

    Thank you for the inquiry!
    BioLogic Company

  217. Nancy Palmer on Fri, 10th Jun 2016 8:44 pm 


    For the last four or five late spring early summer I have been suffering with rose chafers. They eat every flower and fruit in sight and even swam on my laundry. One of those years I tried nematodes, I don’t remember from where. No change the next year, I wasn’t expecting any help the year I applied them, and there wasn’t. The years after I tried seven, dust not very good , spray works, but I don’t like using it. My land is very sandy soil. I have approx. four mowed acres. But most of that is away from my gardens. Do I need to treat all that lawn and do you have something that works for my problem?

    Thank you.

  218. Jim on Fri, 10th Jun 2016 10:19 pm 

    Central North Carolina, Mainly hot and humid much of the time. Shade garden is a few degrees cooler. I have Heuchera with something (weevils?) devastating the leaves. What product can I use to control them? How great a problem should the pests be if left alone?

  219. admin on Tue, 14th Jun 2016 2:28 pm 

    Nematodes will kill rose chafer larvae in the soil, providing you apply at the right time in their lifecycle. We recommend treating with Heteromask in the late summer/early fall when the young grubs are most susceptible to nematodes. The nematodes can then kill the grubs in the soil providing good control for the following spring.

    Thanks for the question!
    BioLogic Company

  220. admin on Tue, 14th Jun 2016 2:33 pm 

    Scanmask is our recommended product for weevils. The weevils can not only chew holes in the leaves, but the larvae can feed on roots causing plants to weaken and die.

    Thank you for the inquiry!
    BioLogic Company

  221. Sandra on Tue, 21st Jun 2016 1:28 pm 

    Hi. I might have a few grubs on my lawn. I have lots of dry spots because of the heat wave and a few spots that seem to leave me with easy to remove dark uncoloured grass spots. I know that there will always be grubs out there but I was wondering. I have a 1/2 acre lot and was wondering how many and how much would it cost. The lawncare company is willing to spread nematodes for 200.00.??

  222. admin on Wed, 22nd Jun 2016 11:22 am 

    Hi Sandra- I just sent you an email with more information.

    Thank you!
    BioLogic Company

  223. Philip Mullen on Wed, 22nd Jun 2016 3:01 pm 

    I live in middle Tennessee and have recently discovered Japanese Beetles. Should I treat the yard with nematodes now, or wait until September? And which of your products do you recommend?

  224. Carolyn Kerr on Wed, 22nd Jun 2016 5:24 pm 

    I want to use Nematodes for tick control. Which of these two would be better, Heterohabditis bacterophora or steinernema feltiae?

  225. admin on Fri, 24th Jun 2016 6:20 pm 

    At this point it would be best to wait until late summer/early fall when the young grubs are most susceptible to nematodes. Heteromask is our recommended product for all white grubs, including Japanese Beetle grubs.

    BioLogic Company

  226. admin on Fri, 24th Jun 2016 6:21 pm 

    Though nematodes have been shown to kill ticks in the lab setting, they have not been shown to be effective in the field so we do not recommend them for tick control.

    Sorry, and thank you for the inquiry!
    BioLogic Company

  227. Karen on Sat, 25th Jun 2016 1:32 pm 

    I live in the pacific northwest, Victoria, BC; a number of veggies I grow, carrots, parsnips and celery are attacked by the Carrot Rust Fly (psila rosae). What nematodes would you suggest and is there a garden company locally that you supply with nematodes?

  228. admin on Mon, 27th Jun 2016 10:30 am 

    We would recommend treating with Scanmask. It is best to apply in late spring, but since you are in BC they may still be effective if you apply ASAP. Please contact Northwest Beneficials (one of our distribution partners) to see if they know of a retailer near you.

    Thanks for the inquiry!
    BioLogic Company

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