Bacillus thuringiensis israelensis is a specific subspecies of Bt bacteria highly toxic to the larvae of mosquitoes, blackflies, and fungus gnats. Growers and farmers apply it to standing water, irrigation ponds, or greenhouse soils to control these pests without harming beneficial insects, fish, or livestock.
Heard on the job
Drop a Bti dunk into the stock tanks so we don't get a mosquito hatch this week.