House Fly Facts
Houseflies are as common as they are disgusting. Whenever you see one of those bothersome insects buzzing around your home, you’ll want to kill it before it kills you. That’s no joke. Houseflies contaminate food and surfaces simply by landing on them. When you see a housefly on your food, plate, or utensils, it is likely to have recently visited nearby trash, manure, or other rotten waste. Flies transmit parasitic diseases, bacterial afflictions like E. coli and dysentery, and viruses including viral hepatitis.
Like most other creepy pests, flies are prolific. A single female can lay 500 eggs in a 4-day period and she’ll do it in any warm, moist environment—like garbage and feces—where her larvae will have food. Maggots emerge from fly eggs in a day and grow rapidly. Within a few weeks, the maggots grow into full-fledged flies. And the females are breeding machines; they reproduce when they are a mere 36 hours old.
In the summer houseflies adults normally live about two and a half weeks. But hot temperatures shorten their reproduction cycles, allowing them to reproduce numerous generations during a single summer. In warmer climates, flies can spend the winter outdoors in protected locations such as crevices in buildings but they do not reproduce. When the weather warms in spring, the pests return and begin breeding.
While everyone hates house flys, they do perform a necessary function. Without the nasty bugs the world would be overrun with manure and dead animals. By eating this decaying organic matter, house flys are nature’s recyclers.