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. At 60 °F it takes a house fly about 45 days to go through its life cycle; at 95 °F that time is shortened to 7 days.

Where do flies lay their eggs in the house?

House Flies 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.

Where are the flies coming from in my house?

The first thing we look for when inspecting the exterior of a property with flies is the trash cans. Then we check for fallen fruit and pet droppings. If the fruit and waste is not cleaned up in a timely fashion, flies are attracted to the yard to lay their eggs. When the weather gets warm, the eggs will hatch quicker.