Made with natural B.t.i., Mosquito Dunks represent a major breakthrough for people and the environment when compared with the traditional toxic chemical approach to mosquito control.
Once a month float a Dunk in the Water Garden and every place water accumulates around your home - you'll be rid of mosquitoes for the whole season. Each Dunk will effectively treat up to 100 square feet of surface water regardless of depth. Dunks may be broken to treat small areas.
Unused and dried out Dunks retain their potency indefinitely. That's a great shelf life.