House flies are usually gray, less than 4 to 7.5 mm long with four black stripes on the thorax.
They prefer corners and edges or thin objects to rest on. Indoors, they rest on floors, walls and ceilings during the day. Outdoors, they will rest on plants, the ground, fence wires, garbage cans, etc. Night resting places are usually near sources of food and 5 to 15 feet off the ground.
Wide variety of food, including human food, animal food and carcasses, garbage and excrement.
House fly eggs are laid in almost any warm, moist material that will supply suitable food for the larvae. The female may lay a total of five to six batches of 75 to 100 eggs. In warm weather, eggs hatch in 12 to 24 hours.
The adult flies are the most common sign of activity. Larvae also may be seen as they crawl out the breeding material to pupate. Lastly, the pupae themselves may sometimes be observed nearby the breeding material.