Ideal for big box and retail stores, warehouses and other large indoor or outdoor spaces, the Bird B Gone Sparrow Charmer lures sparrows into netting and traps them through the broadcast of the company’s proprietary sparrow call. Field-tested and scientifically proven to attract sparrows from up to 2 acres away, the unit can be an easy add-on to any mist net kit or trap. Its separate remote control functions up to 150 meters away, with volume control of up to 170 db. The built-in speaker features push-button controls, and an additional speaker is available for added coverage. The unit plays up to 18 continuous hours on its rechargeable lithium battery.