Banish most stubborn bird species with actual distress cries. The Super BirdXPeller Pro broadcasts scientifically documented distress & alarm calls that birds easily understand. These sounds are played at a natural level in order to accurately emulate the calls of other birds and bird predators. The targeted pest birds interperet these signals as: "EMERGENCY: STAY AWAY" and avoid the affected area out of instinctual fear. Eliminate expensive recurring cleanup and repair costs with a one-time solution. Installing a bird control system can save a substantial amount of money for your company.