Bark Stop, Bark Free Dog Silencer & Animal Pest Repeller - Yard Sentinel Dual The ONLY to combine Dog Silencer with Pest Repeller; Effective Range Up to 5,000 Square Feet; Complex Dog Bark Scanner Technology; PIR Motion Sensor with Night Time Scanner Technology; Repel All Pests: Rodents, Rats, Mouse, Birds, Skunk, Dogs, Cats, Deer, Raccoon....MORE! 2 Dog Silencing technologies + Green Light Indicator (triggers every time a dog barks): Ultrasonic Dog Silencer PRO (Frequency designed specifically to silence dogs) Sonic Dog Repeller Alarm (irritates dog(s) every time they bark) 2 pest repelling technologies + Red Light Indicator; High Pressure Ultrasonic PRO (can be ADJUSTED for specific pests, OR change sound frequencies so pests dont get accustomed to); Sonic High-Pitched Siren Pest & Intruder Alarm (also act as a burglar alarm to protect you & your family) 2 Power Sources: AC Power (included) or Batteries (not included); weather Resistant; Maintenance FREE; No Traps or Chemicals; Continuous Activate Mode (when pests are out of range); Alarm Dial (included); Sensor Sensitivity Dial (included); Ultrasonic Dial (included) more at your commend! 30 DAY MONEY BACK IF NOT 100% SATISFIED; 1 YEAR MANUFACTURER'S WARRANTY; Weather Resistant; Easy to Mount any Where: Yard, Garden, Balcony, Rooftops, Campsites, Basement, Garage, Dumpster....MORE!