Solar Ultrasonic Cat Repellent Outdoor Cat Repellent Adjustable Sensitivity and Frequency Ultrasonic Cat Repeller to Repel Pests Garden Protector Safe and environmentally friendly: The ultrasonic pest repeller will not harm any animals, plants, or humans. There are no messy chemicals or pesticides, no traps, no dead animals. The solar ultrasonic animal repellent gets rid of all animals by emitting a mixture of ultrasonic sound and powerful flashing LED strobe lights, scaring intruding animals and pests from leaving the area. Coverage Area - The motion sensor covers a 110-degree arc left and right, the motion sensor distance is up to 19.68 feet (8 m). -- Once the animal stays near the front of the device, the PIR sensor starts working. Upgraded Ultrasonic Version - The irregular and variable frequency makes it more effective in driving away the most aggressive animals thanks to the passive infrared (PIR) motion detection technology. Automatic frequency range adjustment - 25KHZ-61KHZ,