Mosquito Bt Floating Donuts/Dunks (Pack of 6)

Mosquito Dunks float on the water and keep on working for 30 days or longer under typical conditions. While floating, they slowly release a long-term, mosquito larvicide, Bacillus thuringiensis var. israelensis (Bt) at the water's surface. The mosquito larvae eat the Bt and which in turns paralyzes their digestive system. The Bt-affected insects die within days from starvation.