Destroy mosquito larvae with the same tools used by the professionals. Once wet, Mosquito Dunks kill the immature, aquatic stage of the mosquito. Toss a dunk into standing water in an old tire, pond, rain barrel, tree hole and any other place where mosquitoes breed.

• Safe: Bacillus thuringiensis israelensis (Bti) is lethal to mosquito larvae, but harmless to fish, humans and other animals
• Long-term Protection: Protects for 30 days or more
• Effective: One dunk treats up to 100 sq. ft. of water surface, regardless of depth
• Quantity: Pkg. of 20

NOTE: Cannot be sold or shipped to U.S. territories or International.