【Powerful Protection】: Pest Repellent Ultrasonic Plug-in keeps You and Your Garden, Farm, Yard, Protected from Skunk and Other Animals. 【Wide Coverage】: Cat Repellent Outdoor Ultrsonic is effective for an area up to 5000SQ Ft. Adjustable High-Pressure Ultrasonic Sound Wave Frequency:16KHZ-25KHZ. 【3 Modes Operation】: Raccoon Repellent Outdoor has Day, Night or 24-Hour Protection for Your Garden, Lawn, Farm, Barn, Warehouse, Patio or Wherever Safe and Effective Pest Control is Needed. 【Easy to Use】: Ultrasonic Rodent Repeller is Simple to Operate, Select Desired Mode, Set Ultrasonic Waves Frequency, Adjust Sensor Sensitivity, Plug-in or Put in 4 “C” Batteries.