Bird-X Yard Gard Ultrasonic Animal Repeller!
"Humane, effective, maintenance-free electronic yard protector keeps animals away from your property without messy or expensive chemical solutions. Independent laboratory testing has proven YardGard sound technology to be a highly effective form of pest control. Use it to repel stray dogs, feral cats, deer, raccoons, skunks, rabbits, squirrels, opossums, armadillos, rodents, bats, insects and other creatures. Coverage: up to 4,000 square feet Uses: yards, lawns, gardens, porches, buildings, greenhouses, more!