Bactimos® PT

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Bactimos® PT

Bactimos® PT


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Product Specs: Bacillus thuringiensis subsp. israelensis (12.3%)

Packaging: 2x10 LB/CASE


Bactimos PT is a high-potency (800 International Toxin Units [ITU] per milligram) pellet formulation of Bacillus thuringiensis subsp. israelensis (Bti, strain AM65-52) designed specifically to target nuisance populations of non-biting midges (Chironomidae). Bactimos PT is designed to sink immediately upon application to assure accurate application of the product to the sites where larval populations develop.

Where and When to Use Bactimos® PT:

Bactimos PT should be applied uniformly over the entire surface of the lake or pond. In large habitats where complete surface treatments are not possible, applications concentrated along the perimeter may be effective in reducing localized midge populations. Larval sampling in some habitats has indicated that significant larval populations occur within 3–4 meters of the pond perimeter in 1-meter-deep water.

Apply 22–27 lbs/acre (25–30 kg/ha) through conventional ground equipment to typical midge habitats such as man-made/natural lakes, ponds, lagoons, sewage oxidation ponds, channels, and ditches used for industrial discharge.

Use higher rates of Bactimos PT in deeper water ≥ 20 inches (0.5m). Repeat applications as needed after 2–3 weeks. Control of midges may be gradual over a period of 2 weeks.


  • Bactimos PT sinks immediately assuring accurate application
  • Bti can be applied to almost any aquatic habitat without environmental concerns
  • Target specific & highly effective due to mode of action

Mode of Action:

Bacillus thuringiensis subspecies israelensis is effective to midge larvae in high doses due to their near neutral PH mid-gut. When Bactimos PT is ingested by midge larvae, the Bacillus thuringiensis subspecies israelensis act as a stomach poison. The mid-gut of the midge larvae is broken down, eventually resulting in paralysis and death of the larvae. Bti is target specific and does not adversely affect wildlife or beneficial insects, humans or pets.

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