Mosquito Dunks (set of 6)

Mosquitoes lay eggs in standing water around your home. Doughnut-shaped Mosquito 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 birdbaths, rain barrels, ponds, ditches, tree holes, roof gutters, unused swimming pools, and anywhere else water collects. A single dunk destroys mosquito larvae in up to 100 square feet of water for a month. Set of 6. USA.