Summit Chemical Mosquito Dunks provide optimal mosquito protection and quick, hassle-free use. Available in industrial packaging for added convenience and sold in a 20 count. Kills Mosquito Larvae Before They're Old Enough To Bite Organic Lasts Up To 30 Days Each Dunk covers 100 square feet of surface area The only product with BTI, a bacteria toxic only to mosquito larvae. Non-toxic to all other wildlife, pets, fish, and humans
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