The females are bloodsucking and may bite humans in exposed skin areas such as the neck or face.
Typically dark in color with broad, transparent wings.
Adults range in size from 2.5 to 3.5 mm (0.01 to 0.14 in).
Cluster Flies breed in the ground outside of buildings during late Spring into early Summer.
Cluster flies are actually parasites of earthworms.
Cluster Flies favour lofts and roof spaces and can often be found in vast numbers in roof voids.
Adult drain flies are tiny (1/5 to 1/6 inch long), fuzzy, dark or grayish in color.
Drain flies are naturally attracted to damp places which can lead them to land and breed in sewers, grease traps and clogged drains.
Horse Flies are bloodsucking insects that can be serious pests of cattle, horses and humans.
Horse Flies are attracted to such things as movement, shiny surfaces, carbon dioxide and warmth.
House flies are gray, approximately 6 mm (1/4 inch) long.
House flies are suspected of transmitting at least 65 diseases to humans.