Easy to apply and completely non toxic to wildlife, pets, fish and humans. Summit Mosquito Dunks are America's best selling home owner mosquito control product. Mosquito dunks are made with a bacteria called BTI that is only toxic to mosquito larvae, killing them before they can even bite.
Each dunk treats 100 sq. ft. of surface water and lasts for 30 days. Mosquito Dunks can be used in fountains, ponds, bird baths, and any other body of standing water. It is also labeled for organic gardening by the U.S. EPA.
Please note: dunks are not intended for drinking water receptacles.