Mosquito Dunks® Each dunk® kills mosquito larvae for 30 days or more. HomeProductsMosquito Dunks® A Mosquito Dunk® looks like a small, beige donut which floats on standing water. As the Dunk® slowly dissolves, it releases a bacterium which is toxic to all species of mosquito larvae. Each dunk® kills mosquito larvae for 30 days or … Continue reading Mosquito Dunks®