If you see many house flies, you may have an infestation. Additionally, you may find eggs. Females lay batches of about 100 eggs on food waste, rotting meat, and feces. The eggs hatch quickly ...

If you're experiencing an insect infestation and want to know how long flies live before you call for help, read on. According to Orkin, houseflies undergo four stages: egg, larva, pupa and adult.