Spotting a random fly in your home is pretty normal. But when you suddenly start seeing the buzzing pests everywhere, it’s time to take action.
Technically, flies can breed inside your home, but the odds are pretty high that they’re coming in from the outside, says entomologist Roberto M. Pereira, Ph.D., an insect research scientist with the University of Florida. Most commonly, flies will make their way in through torn window screens and open doors, and they love to linger around mulch piles (which they breed in) or garbage cans stored near points of entry.
Animal poop can also be an issue, says entomologist Nancy Troyano, Ph.D., Director of Operations Education and Training for Ehrlich Pest Control. “Flies outside breed on decaying organic waste, such as feces or rotting meat,” she says. “If there is a place for these insects to breed, they will continue