The housefly is the most common of all domestic flies, accounting for about 91% of all flies in human habitations, and indeed one of the most widely distributed insects, found all over the world. It is considered a pest that can carry serious diseases. They are often called Filth Flies and are highly annoying.
Treatment: A residual contact spray can be used for quick knock-down and kill of all flies, but has no long lasting effect. Treatment should be done twice weekly for fly control.