In an effort to help protect residents from mosquito-borne diseases, Richmond County Environmental Health Section will be providing mosquito larviciding dunks for residents to treat standing water within their yards. Mosquito Dunks is a biological mosquito larvicide that settles in the water where it is eaten by mosquitos. Each dunk will treat for 30 days in 100 square feet of standing water. To prevent the donut shaped larvicide from washing away a string can be attached through the center hole. The mosquito dunks can be used in water gardens, old automobile tires, ditches, tree holes, rain barrels, and unused swimming pool. Larvicide can be picked up at Richmond County Health Department, Environmental Health Section at 127 Caroline Street, Rockingham.