According to Orkin, houseflies undergo four stages: egg, larva, pupa and adult. A female housefly will lay its eggs near a food source. This includes animal feces, rotting food, trash or any ...

What happens when a housefly lands on your food? First, houseflies have no teeth. They eat by slurping fluids through a trunk-like nose. When they land on solid food, they regurgitate saliva on it.