Figure 5-9. Life cycle of the common housefly.
d. Control Measures. Flies may be controlled through proper sanitation that
eliminates their breeding places, by the screening of living quarters, and by the use of
chemicals to kill both adults and larvae.
(1) Control of breeding places. The elimination of breeding sites through
proper sanitation is the most effective fly control measure. This requires that all human
waste, animal manure, and garbage be covered, disposed of, or treated.
(2) Protection of food against infestation. All food-handling places should
be properly screened to protect food against infestation by flies. The screens should be
constructed of 18-mesh wire to bar mosquitoes as well as flies. Food-handling places
should also be equipped with self-closing doors that fit snugly and open outward.
(3) Chemical control. While the use of chemicals is an important aid to fly
control, it should never be adopted as a substitute for sanitation. In places where
sanitation is difficult, chemicals may be used to control fly breeding or to prevent new
adults from leaving their breeding places.
(a) Space spray. Resemethrin insecticide supplied in low-pressure,
12-ounce dispensers may be used to kill flies quickly. When correctly applied, it is very
effective. Close the windows and doors before spraying the insecticide and keep them