House flies rarely breed indoors, but may enter through open windows or doors. ... House flies breed in decaying organic matter such as livestock feces and garbage. They are active on warm days year around but reproduce most quickly in the summer.
Can flies have a nest in your house?
Homeowners typically find house fly eggs in moist, decaying organic material like trash, grass clippings, or feces. Elongated and pale in color, they appear in clusters and hatch quickly after being laid by the female fly.
How do you know if you have a fly nest?
Signs of a Fly Infestation
- Small dark clusters of spots - in light areas (the size of a pinhead)
- Regular sighting of flies - around your home, food or bins.
- Maggots – these are flies in their larval stage and could indicate a potential breeding site on your property.