The common house fly Musca domestica is a pest that can carry serious diseases into the household.
Houseflies are potential vectors of diseases such as dysentery, gastroenteritis, typhoid, cholera and tuberculosis. They will frequent and feed indiscriminately on any liquefiable solid food or food stored for human consumption.
The house fly is very common in dumps, sewers and garbage heaps. It can feed on faecal matter, discharges from wounds and sores, sputum, and all sorts of moist, decaying matter such as spoiled fish, eggs and meat.
Flies excrete wherever they come to rest and thereby are ideally suited to mechanically transmit disease organisms.