Aquabac xt Aqueous Suspension, 2.5 gal, 2/case

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Part Number:211021
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  • Bti is a species specific microbial agent; it does not interrupt the normal functioning of other beneficial species and predators.
  • Bti

A microbial insecticide effective against mosquitoes, blackflies, fungus gnats, nuisance flies (Psychoda spp. and Chironomus spp.) and nuisance aquatic midges (Chironomine) in a variety of habitats.

Aquabac xt can be used in any habitat which supports mosquitoes, black flies, fungus gnats or aquatic midges. Common appropriate mosquito habitats include, but are not limited to woodland pools, roadside ditches, tree holes, temporary pools, artificial containers, and floodplains. To target black flies, Aquabac xt is applied to production areas of rivers and streams. Aquabac xt must be applied when mosquito or black fly larvae are present and in a feeding life stage, the active ingredient in Aquabac xt must be ingested by the larvae, no contact effects.


  • Bti is a species specific microbial agent; it does not interrupt the normal functioning of other beneficial species and predator.
  • Bti can be applied to almost any aquatic habitat without environmental impact concerns.
  • Bti is highly effective and due to its mode of action there is little chance mosquitoes will build resistance.


2.5 gal jug, 2 x 2.5 gal case, 30 gal drum, 250 gal tote

Active Ingredient:

Bacillus thuringiensis subspecies israelensis

Mode of Action:

Bacillus thuringiensis subspecies israelensis is specific to mosquitoes and black flies due to the reaction in their high pH mid-gut. Bti spores contained within a crystal, known as a delta endotoxin, only activate in a highly basic digestive tract such as those specific to mosquitoes and black flies. When Aquabac is ingested by a mosquito or black fly larvae, the Bacillus thuringiensis subspecies israelensis act as a stomach poison. The mid-gut of the mosquito or black fly 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.

Application Rates:

Floodwater, roadside ditches, irrigation ditches, rice fields, pastures, woodland pools, snowmelt pools, standing ponds, standing pools, standing water containing mosquito larvae in fields growing crops such as alfalfa, almonds, asparagus, corn, cotton, dates, grapes, peaches and walnuts 0.25-2.0 pts/A
Tidal water, salt marshes, catch basins, and storm water retention areas. 0.50-2.0 pts/A
Polluted water (sewage lagoons, animal waste lagoons, etc.), water with moderate organic matter, and water with a high concentration of suspended solids 1.0-2.0 pts/A

*Use higher application rate in polluted water and when late 3rd and early 4th instar larvae predominate, mosquito populations are high, water is heavily polluted, and/or algae are abundant.

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