Gnatrol WDG is an OMRI-listed BTI larvicide that kills fungus gnat larvae directly in the soil — where the infestation starts.
 
Ideal for:
• Houseplants
• Hydroponics
• Coco coir
• Organic growing
 
Just mix with water and apply to soil as usual.
Larvae typically stop feeding within 24–48 hours after treatment.
 
FAQ
How long does Gnatrol take to work?
Fungus gnat larvae usually stop feeding within 24–48 hours after treatment.
 
Does Gnatrol kill adult fungus gnats?
No. Gnatrol targets larvae in the soil, helping break the infestation cycle at the source.
 
Is BTI safe for houseplants?
Yes. BTI is widely used for indoor plants, hydroponics, coco coir, and organic growing.
 
Does Gnatrol require soaking or straining?
No. Gnatrol WDG dissolves directly in water — just mix and apply to soil.
 
Expiration Date
January 31, 2028

Gnatrol WDG BTI – Kills Fungus Gnat Larvae

Name: Gnatrol WDG BTI – Kills Fungus Gnat Larvae
Brand: Valent

17,95 US$

Ounces

Cantidad

Coverage depends on application strength:

• Heavy infestation rate (3 tsp per gallon):
1 ounce Gnatrol treats approximately 3.5 gallons of water

• Maintenance / prevention rate (1/4 tsp per gallon):
1 ounce Gnatrol treats approximately 44 gallons

Suitable for fungus gnat control in:
• Houseplants
• Hydroponics
• Coco coir
• Soil grows
• Organic gardening
For best results, apply Gnatrol WDG as a soil drench to target fungus gnat larvae in the top layer of growing media.

To fully break the fungus gnat life cycle:
• Apply 3 total treatments
• Reapply every 5 days
• Continue until adult gnats are no longer present

Soil / Houseplant Application Rates
Per 1 gallon of water:

• Preventative use:
1/4 – 1/2 teaspoon

• Light infestation:
1 teaspoon

• Medium infestation:
2 teaspoons

• Heavy infestation:
3 teaspoons

Apply enough solution to thoroughly moisten the top 1–2 inches of soil.

Fungus gnat larvae typically stop feeding shortly after ingestion and usually die within 24–48 hours.

Hydroponic Reservoir Rates
Per 25 gallons of reservoir water:

• Preventative use:
23–46 grams

• Light infestation:
1–1.5 ounces

• Medium infestation:
2–3 ounces

• Heavy infestation:
3.25–6.5 ounces

For hydroponic systems, repeat application every 5 days for 3 total treatments to interrupt the breeding cycle.

Important
• Safe for use in soil, coco coir, and hydroponic systems
• Mix thoroughly before application
• Always follow the product label directions
• Store in a cool, dry place away from direct sunlight

🚚 Free U.S. shipping on orders over $14

Gnatrol WDG BTI – Kills Fungus Gnat Larvae

Coverage & Mixing Rates

Application Instructions:

Shipping Info:

Labels & SDS