Mosquito Dunks

Mosquito Dunks are made with natural B.t.i. (Bacillius thuringiensis israelensis), a bacteria which is deadly to mosquito larvae but harmless to humans, fish, and other animals. The sustained-release B.t.i. kills mosquito larvae before they can mature into adults. Simply place the Mosquito Dunk in your pond, water garden, or any place where water accumulates and mosquitoes breed. One Dunk treats up to 100 square feet of surface water (regardless of depth) for 30 days or longer. The Dunks retain their potency even after being dried out or stored.