Organic fungus gnat control with the naturally occurring bacteria Bt

Gnatrol® WDG 16lb. Biological Larvicide provides sustainable control of fungus gnat larvae with the naturally occurring bacterial strain Bacillus thuringiensis subspecies. israelensis strain AM 65-52. For use in house plants, ornamentals and vegetable starts. 

• Targeted for fungus gnat larvae in the soil
• Apply with a drench
• Compatible with beneficial insects and nematodes
• Resistance management tool 
• Easy to use formulation with low dust granules

Once the larvae have ingested Gnatrol, they become paralyzed, stop feeding immediately and die—usually within 24 hours. Gnatrol is now available in a water dispersible granule (WDG) formulation that will not leave a residue and is easier to measure for increased application accuracy. Sold in a 16 lb bucket. 

Application Rates

Light infestation 3.2 to 6.4 oz/100 gallons, apply as a drench

Heavy infestation 13 to 26 oz/100 gallons, apply as a drench

Gnatrol® WDG Product Label

Gnatrol® WDG Safety Data Sheet

Gnatrol® WDG OMRI Certificate

Gnatrol® WDG Brochure

Nufarm Beneficial Insect Compatibility Chart