Bacillus Thuringiensis (BT): Definition and What it is

A naturally occurring bacterium used as a biological pesticide, particularly effective against caterpillars and mosquito larvae.

What is a Bacillus thuringiensis (Bt)?

Bacillus thuringiensis (Bt) is a naturally occurring soil bacterium that produces proteins toxic to certain insects, particularly caterpillars and mosquito larvae. Bt is widely used as a biological pesticide because it is specific to target pests and generally safe for humans, pets, and beneficial insects.

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References

PestWorld.org - Official NPMA Consumer Education Site
EPA - Safe Pest Control and Pesticide Safety
EPA - Pest Control Resources for Residents
NPMA - National Pest Management Association