Common Flies :
Cluster Flies can often be found under felt in attics and around heating and ventilation pipes where they appear in spring and autumn. It is at this point the flies head towards the light and are exposed in bedrooms or upper floor offices/warehouses.
The laval food of the Housefly must be moist, vegetable matter, found on rubbish tips and food residues in kitchens. Manure heaps are favoured locations for the fly to lay its eggs in batches of 120-150, which can hatch in between 8hrs – 3 days dependent on conditions.
Fruit flies are common in homes, restaurants, bars, supermarkets and wherever else food is allowed to rot and ferment. Adults are about 1/8 inch long and usually have red eyes.
Fruit flies are especially attracted to ripened fruits and vegetables in the kitchen. But they also will breed in drains, waste bins, empty bottles and cans, mops and cleaning rags. All that is needed for development is a moist film of fermenting material.