Summit's Mosquito Dunk Chunks are simple and safe to use around people, plants, pets, fish and livestock. Convenient for bird baths, rain barrels, stock tanks and more - anywhere water stands. 5 Chunks per pack controls for 5 months (30+ days per chunk). Each Chunk covers up to 25 sq. ft. of surface water. Biological, species-specific control. Does not affect beneficial insects, honeybees, tadpoles, dragonflies or anything else.

Manufacturer description. Specifications above are from our verified product data.