Flies are attracted to decaying materials where they and their young feed. Flies cannot eat solid food and soak up liquids instead. If the food is solid they regurgitate their stomach contents onto the food to liquefy it, then soak it up.
Females lay their eggs close to or on the food source. The eggs hatch immediately and the larvae begin feeding. Once the larvae pupate into adult flies they live long enough to mate and die soon afterwards. Flies are prolific breeders and one pair of flies can produce hundreds of young.
Because flies frequent places where there is decaying matter and feces, they easily pick up bacteria and diseases and carry them to the next place they land. They usually only fly short distances and this increases the number of times they land on a surface. If that surface is you, your food or any place that you touch, those bacteria and diseases can easily be transmitted to you. Also, flies will cut skin to drink blood if they are thirsty. In this way they can also transmit disease directly into your bloodstream.
Entry: Flies find their way inside homes through open windows and doors.
Do-it-yourself Effectiveness: Control fly populations around your home and yard by disposing garbage and pet waste in airtight bags and put outside garbage cans away from the house.
The Face Fly has a gray head with black strips, a gray and black body, and an orange underbelly. They prefer direct sunlight and warmth. The female lays her eggs in fresh cattle manure, where they will hatch and feed, then drop to the ground where they will emerge later as adults.
The Fruit Fly is common in areas where there is food, especially fruits. They often find their way inside on shipments of fruits and vegetables. Fruit Flies lay their eggs on the overripe or decaying foods where the larvae feast on the overripe food upon hatching.
he Moth Fly is a very small fly with hairs that give it a fuzzy appearance. It is not a good flyer and hovers rather than flies. The Moth Fly is commonly referred to as the Drain Fly because when it is seen in homes it is usually around sink drains in bathrooms and kitchens.
The Blow Fly and the Bottle Fly are small flies identified by their shiny, metallic looking bodies, usually blue or green in color, depending on the species, but other colors can also be present. The Bottle Fly is a subspecies of the Blow Fly.
The Phorid Fly is a small brown fly with a black head and an arch on its upper back. It may be mistaken for a gnat but can be identified from its habit of running quickly rather than flying away.
The Crane Fly has long slender legs, wings and body. The Crane Fly is often mistaken for a mosquito and at first glance may appear threatening. It is larger than a mosquito however, and in tropical climates can be nearly 3” long.
The Cluster Fly has a crooked checkerboard patterned black and grey body. The area behind the head is covered with golden yellow hairs. They breed outside and lay their eggs in the ground in late spring to early fall.
The Fungus Gnat is a tiny species of fly with transparent wings on a black body. They lay eggs in wet soil and near vegetation where the larvae feed on the mold that grows in over-wet soil and on the roots of the plants nearby.
The Flesh Fly is gray and black, with stripes and patterns that are similar to the common housefly but is identified by its red eyes. Flesh flies lay their eggs on dead animals, pet waste, and in garbage and some in open wounds.
The House Fly can be found around the world. It breeds quickly, laying eggs in any warm moist environment. It prefers manure or feces but will use garbage or any other smelly environment it can find.