Mosquito Dunks are a trusted, top-selling solution for eliminating mosquito larvae before they become a nuisance. Each dunk contains BTI, a naturally occurring bacterium toxic only to mosquito larvae, and provides protection for up to 30 days. Safe for people, pets, and wildlife, one dunk treats up to 100 square feet of standing water, making it ideal for ponds, birdbaths, and rain barrels.

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