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Gnatrol Organic WDG BTI Pesticide 1/2lb.

Regular price $33.99

  • 1/2lb. Weight
  • Gnatrol is a highly selective, biological larvicide for control of fungus gnat larvae
  • Soluble powder form
  • Omri Listed
  • Can be used indoors, and in greenhouses
  • Will not effect State Mandated testing of finished product
  • Bacillus thuringiensis subspecies israelensis strain AM 65-52 solids, spores and insecticidal toxins 37.4%

We typically ship orders out within 1-3 business days. We ship most packages via Fedex, UPS, and USPS and tracking will be emailed once your order has been shipped. We ship orders weekdays, Monday through Friday from our Oklahoma City, Oklahoma warehouse. You can contact us with any shipping related questions Contact US

You can return items within 30 days of invoice date to get a full refund, assuming the item is in 'as new' condition, and unopened  To read our full refund and returns policies go to our Refunds & Returns page.

 We do not accept returns of any opened products.



Ask a Question
  • How much to mix per gallon of water for fungus gnat drench? Thanks, Alicia

    We recommend using 1 tablespoon per gallon of water soil drenched once per week. You can read this blog post for a detailed explanation on the proper way to use gnatrol.

Customer Reviews
5.0 Based on 3 Reviews
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United States United States

So Far, So Good!

Shipping isn’t crazy fast, but for great product I didn’t mind. As far as keeping the gnats under control in our grow room, it is a bit early to tell if it has broken the cycle yet. The only thing I would recommend is to include the mixing ratio for the product. :)

United States United States

Worth it.

Far more effective than any bits or dunks I’d ever used. Primarily just got it to have in my arsenal, but also had the recent choice of disrupting a grow to adjust a trial soil mix or treating with some BTi until it finished… glad I just let them finish. The Gnatrol did its job extremely well and gave me the cushion I was after until I was able to make some adjustments to the soil. Also just prefer its granular form.

Darren Y.
United States United States

Greenhouse help

Works as stated, fast shipping!

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