Fleas pass through a complete life cycle consisting of egg, larva, pupa and adult. A typical flea population consists of 50 percent eggs, 35 percent larvae, 10 percent pupae and 5 percent adults. Completion of the life cycle from egg to adult varies from two weeks to eight months depending on the temperature, humidity, food, and species. Normally after a flea has fed off its host, the female flea lays about 15 to 20 eggs per day up to 600 in a lifetime usually on the host (family pets, livestock, wild animals, humans, etc.). Eggs loosely laid in the hair coat can fall out almost anywhere the host rests or eats. No place in a home is safe from fleas.