Too many flies buzzing around in your houses could be a striking nuisance by all means. They may be non-biting, but are powerful carriers of a wide variety of diseases like salmonella, dysentery, tuberculosis, cholera and parasitic worms. These flies feed on human foodstuffs and wastes where they can pick up and transport various disease agents. Their primary breeding sites include dung, organic waste matter from food processing, organic manure, sewage, accumulated plant materials.
Few varieties of flies are house fly and mosquitoes, crane flies, gnats, black flies, horse flies, and blow flies. Some four-winged insects are loosely termed flies, such as dragonflies, caddis flies, and mayflies. But true flies, which evolved from four-winged insects, possess only a single pair of wings; some are among the fastest flying insects.