The flies most often detect a housefly infestation. Lapteric larvae can be seen emerging from their nests as they become pupae. In addition, House flies can be heard around the house and seen by some people.
House flies buzz because their wings beat in unison. House flies also have four black stripes along their thorax and a grey appearance. The length of an adult house fly is between 1/8 and 1" (4 to 7 mm).
Their body is slightly hairy, and they have one set of wings. They also have compound red eyes equipped with thousands of tiny lenses to give them a wider field of vision. Female houseflies are usually more important than their male counterparts. Houseflies do not have fangs or stingers.