Foggers and hydraulic sprayers should deliver a fine mist that air currents move across the cattle lots. The insecticides and rates are the same as for mist blowers. Winds above five miles per hour move them too rapidly for effectiveness. Aircraft can also be used. Fixed-wing aircraft should spray with at least 5 gallons of water plus the insecticide to be effective.
Helicopters provide excellent fly knockdown with area sprays but are quite expensive to operate.
This may be the only feasible method where cattle come to lots to water and then return to pasture. Stable flies breed around the lots, attack the cattle and then follow them back to the pastures. Sometimes pens that have served as winter feeding facilities will provide fly breeding areas. When the flies emerge they move to cattle in nearby pastures to feed and then back to the lots to deposit eggs. In either situation, a cleanup of the lots may be the best control.