All mosquitoes require water to breed. Just a few inches of water are all that is required for a female to deposit her eggs after her blood meal. Tiny mosquito larvae develop rapidly in bird baths, roof gutters, and old tires in the smallest amount of water. With that in mind, imagine how many mosquitoes can develop in an ornamental pond that lays dormant for years after it has fallen into disrepair. Kiddie pools left with a few inches of water after the fun of summer wanes produces thousands of adult mosquitoes each week with the potential to carry disease.