Understanding the Purpose of Mosquito Dunks

Mosquito dunks are small tablets that dissolve in water and contain Bacillus thuringiensis israelensis (Bti), a natural bacteria that targets mosquito larvae. Placing one tablet in standing water where mosquitoes breed can protect against mosquitoes for up to 30 days while treating up to 100 square feet of surface water, providing a mosquito-free environment for outdoor activities.