AquaBac® XT

Clarke · Bacillus Thuringiensis · EPA Reg 62637-1 · Insecticide Document last checked 2026-05-30

According to the label From the product label

These details were extracted from this product's label PDF. The label is the law. Confirm every rate, site, restriction and safety requirement against the label before mixing or applying. Check for a state supplemental label; a product may be restricted or prohibited in a state or site even when a rate appears below. · EPA registration data for Reg. 62637-1 →

AquaBac® XT is a microbial larvicide consisting of Bacillus thuringiensis subspecies israelensis (Bti) Strain BMP 144 solids, spores, and insecticidal toxins. It is formulated as an aqueous suspension and is designed to quickly control mosquito larvae, often within 24 hours. The product is effective against mosquitoes, blackflies, nuisance flies (Psychoda spp. and Chironomus spp.), and nuisance aquatic midges (Chironomidae) across various habitats. It is used to kill larvae before they reach the breeding adult stage, including those that may transmit West Nile virus, encephalitis, and heartworm disease. For application, it can be used in various settings including floodwater, ditches, rice fields, pastures, standing pools, and various water bodies. Application methods include ground equipment or aerial application. Users should note that the product is highly effective in water with high concentrations of suspended solids. When handling, personal protective equipment (PPE) should include long-sleeved shirts and long pants, waterproof gloves, and shoe covers. If inhaled, move the person to fresh air; if skin contact occurs, rinse immediately with plenty of water for 15-20 minutes. Always keep out of reach of children.

Pests covered (5)

MosquitoesBlackfliesNuisance Flies (Psychoda spp. and Chironomus spp.)Nuisance Aquatic Midges (Chironomidae)Flies, Mosquitoes

Areas treatable (3)

Floodwater, ditches, rice fields, pastures, standing pools, permanent water bodies, etc.Various habitatsShallow lakes and ponds

How to treat each type of area 4

Floodwater, ditches, rice fields, pastures, standing pools, permanent water bodies, etc.

Target pest	Location	Rate	Unit	Label notes
Mosquitoes	Outdoor	0.2 to 2.0	pt/A	Effective in water with high concentrations of suspended solids.

Various habitats

Target pest	Location	Rate	Unit	Label notes
Blackflies	Outdoor	0.75 to 0.75	mg/A	Maintain concentration in stream for 15 minutes using ground equipment or meter release systems.
Nuisance Flies (Psychoda spp. and Chironomus spp.)	Outdoor	10-50	mg/L	Treat wastewater feeding systems for 30 minutes.

Shallow lakes and ponds

Target pest	Location	Rate	Unit	Label notes
Nuisance Aquatic Midges (Chironomidae)	Outdoor	1.0	gallon/Acre	Ponds less than an acre, not more than 6 feet deep. Use pre-calibrated device.

Mixing instructions 1

For pests	Location	Amount	Per	Label notes
Blackflies	Outdoor	0.75-0.75	mg/A	Maintain concentration in stream for 15 minutes.

Worker safety

PPE required Long-sleeved shirts and long pants, waterproof gloves, shoe covers. Mixers/loaders must use a dust/mist filtering respirator meeting NIOSH standards of at least N-95, R-95, or P-95.

Timing & weather

Apply during adequate precipitation during application to avoid drying.

Use restrictions 3

Keep out of reach of children.
Do not contaminate water that is intended for human consumption.
Do not apply through any irrigation system.

Label SDS

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