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For example, Bacillus thuringiensis israelensis (BTI) is known to produce proteins that can kill fungus gnats larvae and some other insects like mosquitos. [ 20 ] [ 21 ] [ 22 ] [ 17 ] BTI is a naturally occurring bacteria that has been used for decades—the United States EPA reports that it has no toxicity to humans. [ 20 ]
Bacillus thuringiensis serotype israelensis (Bti) is a group of bacteria used as biological control agents for larvae stages of certain dipterans. Bti produces toxins which are effective in killing various species of mosquitoes , fungus gnats , and blackflies , while having almost no effect on other organisms.
A larvicide (alternatively larvacide) is an insecticide that is specifically targeted against the larval life stage of an insect. Their most common use is against mosquitoes. Larvicides may be contact poisons, stomach poisons, growth regulators, or (increasingly) biological control agents.
What causes gnats in the house? " Many gnats feed, breed, and hang out in sludgy, moist substrates," Crumbley explained. "These substrates could be saturated soil, animal waste, and clogged drains ...
The insect stops eating and starves to death; live Bt bacteria may also colonize the insect, which can contribute to death. [24] [29] [30] Death occurs within a few hours or weeks. [31] The midgut bacteria of susceptible larvae may be required for B. thuringiensis insecticidal activity. [32]
Insecticides are pesticides used to kill insects. [1] They include ovicides and larvicides used against insect eggs and larvae, respectively. The major use of insecticides is in agriculture, but they are also used in home and garden settings, industrial buildings, for vector control, and control of insect parasites of animals and humans.