Cattle egrets and killdeer are also tabanid feeders. Currently there are no adequate means for managing populations. Traps are effective in control of small areas such as yards, camping sights, and swimming pools. Trapping of nuisance flies has reduced their numbers on the Atlantic Coast of the United States. Traps have been effective when used around cattle that are confined to manageable areas.
Some traps are cylindrical, black and shiny balls.
The flies are attracted to these objects as the wind moves them. Malaise traps can catch large numbers of flies by simply being in their flight paths or by the use of attractants, such as CO 2 and octenol. For livestock, pyrethroid pour-ons function as limited repellents. Self-applicating methods are not effective for horse flies. Ear tags and head collars impregnated with insecticides have had success in control.