FACT: It depends on what you mean by \"bodies of water.\" Mosquitoes need standing water to hatch their eggs but can do so in as little as a bottle cap or tablespoon of water. So mosquitoes don't need ponds or drainage ditches. They can hatch in places like gutters, plant container saucers, poorly drained yards and discarded tires – meaning you probably have a mosquito nursery in your back yard. No water, no mosquitoes. It's that simple.