A large volume of insecticide would have to be applied to get the material to this level making it economically unfeasible for large livestock production areas. Therefore, widespread use of insecticides in maggot developmental areas is generally avoided. The amount of area treated, persistence of the aerosol cloud and rate of influx of new flies into the area, after treatment, will affect duration and degree of control. Insecticides applied as residual sprays may be applied to sides of buildings where adult stable flies congregate. Before using residual sprays one should apply the material to a small area to make sure that staining does not occur.
Control can be variable depending on type of substrate treated.
Residual sprays should be used on an as-needed basis because continual applications may contribute to fly resistance. Fiberglass trap showing yarn arrangement. Stable flies are attracted to the fiberglass panel and the vertical surface of the yarn. Those flies that land on the insecticide-impregnated yarn pick up enough insecticide to kill them and fly off before dying. There will be no traces of dead flies under the traps.