top of page
2 lb Gnatrol BTI Organic Fungus Gnat Treatment
✔ Expiration Date: 01/31/2028
(When stored properly in a cool, dark environment at room temperature, the manufacturer states there is no strict expiration date. However, best effectiveness is recommended within 2 years.)
 
✔ OMRI Listed for Organic Production
✔ Kills fungus gnat larvae in 24–48 hours
✔ Safe for houseplants, hydroponics, coco coir, and soil grows
 
What Is Gnatrol BTI?
Gnatrol WDG is a biological BTI larvicide that targets fungus gnat larvae directly in the soil. It is widely used by greenhouse growers, hydroponic growers, and indoor gardeners to control fungus gnats at the source.
 
Once fungus gnat larvae ingest Gnatrol, they stop feeding almost immediately and typically die within 24–48 hours.
 
The water-dispersible granule (WDG) formulation mixes easily with water, leaves minimal residue, and allows accurate measuring for consistent application.
 
Recommended Uses
Suitable for:
  • Houseplants
  • Hydroponic systems
  • Coco coir
  • Soil grows
  • Organic gardening
  • Greenhouses
  • Ornamentals
  • Vegetable starts and bedding plants
  • Terrariums 
  • Composting toilets
 
Apply as a soil drench or through hydroponic reservoirs.
 
Mixing Instructions
32 ounces of Gnatrol concentrate makes:
  • Up to 336 gallons at 1 teaspoon per gallon
  • Lower maintenance rates may treat even larger volumes
Application rates may vary depending on infestation severity.
 
Active Ingredient
Bacillus thuringiensis subsp. israelensis (BTI), strain AM 65-52
  • Fermentation solids, spores, and insecticidal toxins .......... 37.4%
  • Other ingredients ............................................................. 62.6%
Total ................................................................................. 100.0%

2 lb Gnatrol BTI Organic Fungus Gnat Treatment

$129.95Price
Quantity

  • Coverage depends on application strength:

     

    • Heavy infestation rate (3 tsp per gallon):
    32 ounces Gnatrol treats approximately 112 gallons of water

     

    • Maintenance rate (1/4 tsp per gallon):
    32 ounces Gnatrol treats over 1300 gallons

     

    Suitable for fungus gnat control in:
    • Houseplants
    • Hydroponics
    • Coco coir
    • Soil grows
    • Organic gardening

bottom of page