Mosquitoes cramping your style? 🦟 Use mosquito dunks in your bird baths, ponds, fountains, and any standing water in your backyard! Simply apply it to any standing water, and it will kill mosquito larvae within hours and lasts for 30 days or more! They contain a natural mosquito larvicide that is harmless to wildlife, pets, fish and humans, so it’s safe for all your outdoor water features! Another benefit is if you mix the mosquito dunk water into other plants, the larvicide also helps control