Mosquitoes have four life stages: egg, larva, pupa, and adult. Laid in water singly or in rafts, mosquito eggs hatch into larvae (called wrigglers) in a few days. The wrigglers grow, molting several times to become pupae (tumblers) that turn into adults. The females require blood to breed. This process can take as little as 4 days to a month. Most of these adult biters don’t move more than a half mile from their breeding site. Others fly many miles away from their breeding spot, which can include standing water in your yard. These sites include, but are not limited to, toys, tires, puddles in the lawn, wheelbarrows, bird baths, gutters, tarps, and septic tanks.