Outdoor Animal Repeller by Aspectek - Ultrasonic Pest Control Device Deters Deer, Cats, Dogs, and Rodents - Cordless, Solar-Powered, Motion Activated Keep cats and other animals away humanely using motion-activated ultrasonic frequency Cordless; can be charged by solar power or USB cable Includes aluminum post for installing in the lawn or garden, or attach by screws to wall, tree or post Strobe light annoys and frightens nighttime pests like skunks and raccoons Includes adjustable frequency and motion sensor dials.