Product Review

82-5028 Features: -No more pesky animals with this handy ultrasonic pest repeller.-Safely repels cats, dogs, skunks, rodents, bats, insects, deer and more.-Simply set the dial to repel specific pests.-Motion sensor senses movement up to 15' away.-Activates the ultrasonic tone. Specifications: -Covers up to 5000 square feet. Dimensions: -Dimensions: 7.5'' H x 3.5'' W x 3.88'' D.

The frequency can be adjusted as stated in the instructions mentioned under the product images to repel different types of pests.  The batteries should also be checked periodically to ensure optimal performance