 Mosquitoes aren't just annoying. They can carry deadly diseases like Zika and West Nile virus. But with Summit Mosquito Dunks, you can have your pond without all the worry. Simply drop a Summit Mosquito Dunk into standing water and kill mosquito larvae for 30 days or longer. Mosquito Dunks are harmless to people, pets, fish, and wildlife. So it's just that... Let's stop hanging around. Visit SummitResponsibleSolutions.com.