Q & A

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#200905 Reply

E. Vinje

Hi Steve –

There are several different species of Bt available for controlling insect pests. Bt israelensis (Bt-i) works to control mosquito, black fly and fungus gnat larvae. While Bt kurstaki (Bt-k) — The Monterey Bt product — is ideal for use against leaf eating caterpillars like tent caterpillars, cabbageworm, gypsy moth and tomato hornworm. I’ve attached a link that will explain the different types of Bt, as well as a link to our most popular Bt for mosquitoes.

Hope it helps!