Over 100,000 species of flies live on earth. Their population usually peaks during the late spring and early summer when weather conditions are most favorable. The life cycle of a fly is just about 30 days.
Flies like to eat manure, which is animal poop, decaying flesh from a nearby carcass, or old garbage and host high levels of bacteria all over their bodies!
House flies will lay their eggs on items such as feces, rotting carcasses, and decaying fruit.