Control may not be possible on non-confined birds. Confined facilities should be screened with mesh small enough to prevent these flies from entering. Flies House flies are the most persistent and common fly pest, although other species such as blow flies and little house flies also are present. House flies do not bite poultry, but are severe nuisances, and can spread some poultry diseases. House flies are present because of poultry manure and exposed wet feed, which are ideal feeding and breeding materials.
Manure management is most important for house fly reduction.
Dry manure management consists of keeping the manure moisture at less than 35 percent. This is accomplished by keeping only one or two birds per cage, mechanically stirring the manure and using ventilation fans in the drop area. The dry manure will stack in cone-shaped mounds. If manure cannot be dried, spread it in fields every five days. In liquid manure pits, the manure should be liquified rapidly to reduce fly breeding.