Mosquitoes lay eggs in standing water around your home. Doughnut-shaped dunks float on water and slowly release bacillus thuringiensis, a natural pesticide lethal to mosquito larvae. Place all-natural dunks anywhere water is left standing for more than a week.
Safe for use in fish habitats, animal watering troughs, birdbaths, rain barrels, ponds, ditches, tree holes, roof gutters, unused swimming pools, anywhere water collects. A single dunk destroys mosquito larvae in up to 100 square feet of water for a month.

Made with Bt-israelensis (Bt-i), a highly specific biological pesticide, this product represent a major breakthrough for people and the environment when compared with the traditional toxic chemical approach to mosquito control. Will not harm people, pets, wildlife or fish.