Deer Gard Electronic Pest Repeller uses ultrasonic sound waves to help effectively and humanely deter destructive and annoying pests from your property. Utilizes ultrasonic sound waves to frighten, annoy and intimidate deer and other wildlife. Helps keep property pest-free without the use of toxic chemicals. Features keyhole slots for easy mounting, and is powered with AC adapter (included) or batteries (sold separately). 15 ft. power cord.