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Bacillus thuringiensis israelensis (Bti)

Bacillus thuringiensis israelensis (Bti)


Bti is a biological or a naturally occurring bacterium found in soils. (Bti is short for Bacillus thuringiensis subspecies israelensis.) It contains spores that produce toxins that specifically target and only affect the larvae of the mosquito, blackfly and fungus gnat. EPA has registered five different strains of Bti found in 48 pesticide products that are approved for use in residential, commercial and agricultural settings primarily for control of mosquito larvae.


Bti is used across the United States for mosquito control. Bti is approved for aerial spraying, which has taken place in Massachusetts, Pennsylvania, Maryland and Michigan, among other states.  Bti can be sprayed over waterbodies such as ponds, lakes, rivers and streams.  Bti is used to kill developing mosquito larvae by being applied to standing water where those larvae are found. Bti can be used around homes in areas and containers where water can collect, such as flower pots, tires, and bird baths. Bti can also be used to treat larger bodies of water like ponds, lakes and irrigation ditches.

AquaBac 200G Bti Granular Biological Mosquito Insecticide, Becker Microbial

AquaBac 200G Granular Bacillus thuringiensis var. israelensis (Bti). Bti is eaten by the mosquito larva and becomes highly toxic to the larva killing them within minutes after ingestion. Since the bacteria are harmless to other mosquito and black fly larva predators, these predators continue to feed on the larva and work in concert with Bti to keep the larva population in check. OMRI Listed

Organic Certification(s): OMRI
Active Ingredients: (S)-Bacillus thuringiensis 2.86%
Insecticide Mode of Action: 11A
Insecticide Class:
Microbial Disruptors
EPA Signal Word: CAUTION / PRECAUCION
Application Rate Range: (see label)
Container Size(s): 40 Lbs.
From $119.95

Duplex-G Larvicide, Zoecon

Duplex-G Larvicide is a dual action extended residual biological larvicide and insect growth regulator granular product to kill mosquito larvae and prevent adult mosquito emergence (including those mosquitoes that may transmit diseases, including West Nile virus, Dengue, Chikungunya, and Zika virus).

Active Ingredients: (S)-Methoprene 1.60% + Bacillus thuringiensis subspecies israelensis 5.35%
Insecticide Mode of Action Group: 7 + 11
Insecticide Class:
Insect Growth Regulator + Biopesticides
EPA Signal Word: CAUTION / PRECAUCION
Application Rate Range: (see label)
Container Size(s): 40 Lbs.
From $739.95

Summit BTI Briquets, Amvac

Summit BTI Briquets, biological control of mosquitoes & psychodid flies. Floating sustained-release larvicide for long-term control of mosquito and psychodid fly larvae.

Active Ingredients: Bacillus thuringiensis subspecies israelensis 10.31%
Insecticide Mode of Action Group: 11
Insecticide Class:
Biopesticides
EPA Signal Word: CAUTION / PRECAUCION
Application Rate Range: (see label)
Container Size(s): 20 Briquets / Card
From $18.95

VectoBac 12AS Bti Biological Mosquito and Black Fly Larvicide, Valent

VectoBac 12AS (also known as SC; Suspension Concentrate) is an aqueous suspension formulation of Bacillus thuringiensis subsp. israelensis (strain AM65-52) for control of mosquitoes, black flies, and closely related fly larvae.

Active Ingredients: Bacillus thuringiensis, subsp. israelensis, strain AM 65-52 11.61%
Insecticide Mode of Action Group: 11
Insecticide Class:
Biopesticides
EPA Signal Word: CAUTION / PRECAUCION
Application Rate Range: (see label)
Container Size(s): 2.5 Gal., 30 Gal.
From $167.50

VectoBac Biological Larvicide Granules, Valent

VectoBac G, GS (formerly CG), and GR are granular formulations of Bacillus thuringiensis subsp.israelensis (strain AM65-52) for control of mosquito larvae.
From $149.95

Vector-Ban Plus Insecticide, Control Solutions

Vector-Ban Plus controls mosquitoes that transmit West Nile Virus, flies, gnats, wasps, fleas, cockroaches, bed bugs, spiders and many more nuisance pests. For use in warehouses, homes, livestock housing facilities, milking parlors, poultry houses and residential yards.

Active Ingredients: Permethrin 10% + Piperonyl Butoxide 10%
Insecticide Mode of Action Group: 3A + UN
Insecticide Class:
Pyrethroids
EPA Signal Word: CAUTION / PRECAUCION
Application Rate Range: (see label)
Container Size(s): .5 Gal.
From $70.95

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