Flies can be a menace to public health.
Filth flies can carry disease-causing organisms ranging from viruses and bacteria to microscopic roundworms. Fly management is important not only to reduce the annoyance they cause, but also as an essential part of disease prevention among human and domestic animals. Adult female filth flies look for a moist place with the right smell to lay their eggs. Such sites may include garbage, animal feces, or a dead animal. Flies can be caught with flypaper or one may collect dead specimens from windowsills and light fixtures.