The tiger and the yellow fever mosquitos lay eggs in places that accumulate a low to moderate amount of water such as small tanks or containers with stagnant water, plant pots and their water dishes, old tires, water drains, or even drained swimming pools. They do not breed in rivers, lakes, beaches, or large reservoirs.
The aquatic mosquito larvae require stagnant water for about four days in order to complete metamorphosis into adults. The females lay eggs on the internal walls of the containers. These eggs are dark colored and elongated and are so small that they are almost invisible to the naked eye. Since under natural conditions the mosquitos don't travel more than about 500 meter radius from their birthplace, the adults and their breeding sites are always found nearby.