Keep unwanted animals at bay with the YardGuard - Ultrasonic Pest Repellent. No need for harsh chemicals, this tool uses sound waves humans can't hear to ward pests off.Rid your yard of pesky animals for good with this programmable animal repeller. This species-specific sonic animal control device allows you to target the animal you want out of your yard with its multiple switch settings. This electronic repeller repels dogs, cats, deer, raccoons, squirrels, skunks, opossums, armadillos, rodents, bats and other creatures. Powerful sonic and ultrasonic sounds waves will scare away the pests for good without harming them. The built-in motion sensor activates when there is movement in the yard but can also be set to "always on" to bypass the motion sensor. Ideal for yards, gardens, porches, buildings and greenhouses, this pest repeller covers 4,000 square feet. Requires either standard 110 electrical plug or 4 "C" batteries, batteries not included. This weatherproof, durable, compact animal repeller will keep your yard safe from those animals who always stick around, no matter what.