- Effectively controls fungus gnat larvae
- Easy to use
- Gnatrol is OMRI-listed for organic production
Knock Out Gnats Biological Larvicide.
Fungus gnat larvae don’t stand a chance.
B.T.I. is a highly selective, biological larvicide for use in greenhouses to control fungus gnat larvae. It may be used on a wide variety of ornamentals, as well as all bulb crops, bedding plants and vegetable sets. Once the larvae have ingested the B.T.I., they become paralyzed, stop feeding immediately and die—usually within 24 hours.
Expiration date of current lot is 01/31/2028
Listed by the Organic Materials Review Institute (OMRI) for use in organic production.
1/4 pound (4 ounces) of concentrate will treat up to 42 gallons
(at the medium infestation rate of 1 teaspoon per gallon).
For use as a soil drench or in a hydroponic system.
Bacillus thuringiensis, subsp. israelensis, strain AM 65-52
fermentation solids, spores and insecticidal toxins . . . . . 37.4%
Other Ingredients . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62.6%
Total . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100.0
EPA Reg. No.: 73049-56-56872
EPA Est. No.: 089287-KS-002(E) / 69208-MO-3(R)
Net Weight: 4 oz.
Concentrated BTI Organic Fungus Gnat Control
Coverage depends on application strength:
• Heavy infestation rate (3 tsp per gallon):
4 ounces Gnatrol treats approximately 14 gallons of water• Maintenance / prevention rate (1/4 tsp per gallon):
4 ounces Gnatrol treats approximately 168 gallonsSuitable for fungus gnat control in:
• Houseplants
• Hydroponics
• Coco coir
• Soil grows
• Organic gardening


