Since we are all worried about the Zika Virus and avoiding contact with the mosquitoes that carry it, here's some advice about preventing the larvae from thriving in your garden.
"Listed below are some recommendations from
the American Mosquito Control Association (www.mosquito.org):
1. Irrigate lawns and gardens carefully to prevent water from standing for several days.
2. Clean debris from rain gutters and remove any standing water under or around structures,
or on flat roofs. Check around faucets and air conditioner units and repair leaks or
eliminate puddles that remain for several days.
3. Destroy or dispose of tin cans, old tires, buckets, unused plastic swimming pools or other
containers that collect and hold water. Do not allow water to accumulate in the saucers of
flowerpots, cemetery urns or in pet dishes for more than 2 days."
Here's the complete article on the mosquitoes from Oklahoma State University - http://entoplp.okstate.edu/pddl/2016/PA15-24.pdf