Immature mosquitoes live and develop in standing water. The location depends upon the species. There are mosquitoes that breed in salt marshes, swamps, crab holes, ponds, swales, bromeliads and even small containers like buckets. But keep in mind, a mosquito only needs a bottle-cap of water to lay up to 300 eggs at one time! As adults, mosquitoes prefer nice shady places around vegetation. Chances are, if mosquitoes are bothering you at home, they are liking breeding someplace nearby.