Can flies nest in your house?

House flies are usually only active during the daytime when they will congregate indoors on floors, walls and ceilings. Outside, house flies opt for hanging around plants, fence wires, garbage cans and the ground.Click to see full answer. In this way, 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.Subsequently, question is, do flies have nests in houses? Keep in mind that flies feed on and lay eggs in anything that is rotting or putrefying. The likely breeding sites for house fly larvae indoors include animal carcasses, large numbers of dead insects, rotting meat or produce, and pet feces (see Sources for House Flies Inside a Home). Also to know is, why do I have so many flies in my house? The most common reason for flies swarming all over your house is an infestation inside or nearby your home. If you suddenly see a swarm of flies that means dozens of eggs have already hatched and developed into flies. The source is likely inside your house, garage, attic or garden.How do you know if you have a fly infestation?If you spot maggots in your home, it’s a sure sign of a fly infestation. Female flies look for moist, dark areas in which to lay their eggs. They’ll lay them in trash, rotting food and manure. When flies invade your home, they may lay eggs in leftover food on the counter or on feces in the litter box.