How do you prevent diseases carried by mosquitoes?

The best way to reduce mosquito populations is by eliminating their breeding grounds, which can be any pool of standing water larger than a few square centimeters where they can lay their eggs. Standing water should be drained or treated. This includes places such as under flowerpots, in umbrella holders, outdoor privies, old tires or fish tanks, and drainage areas from air conditioning systems. Small ponds or swampy areas should be treated to prevent mosquitoes eggs from being laid or hatched.