Starbar QuikStrike Fly Bait Spray is a sprayable powder bait for quick fly control in areas scatter baits can’t reach. A fast-acting spray that attracts and kills bothersome house flies.  Contains (Z)-9-tricosene which is known as an effective ingredient to attract flies. This product can be applied to outdoor locations where flies tend to gather, such as walls, around windows, walkways, garbage bins, and beams.  Safe to use in and around milking parlors, broiler houses, caged layer houses, loafing sheds, swine facilities, and feedlots.