The Pest-X Electronic Pest Chaser is easy-to-use and effective. It is ideal for use in homes and offices. When plugged into a wall outlet, it sends out ultrasonic signals, which are above the average hearing range of humans, cats and dogs, but irritates common rodents and insects. Pest-X is a chemical-free option that is safe to use around pets and children.
You can find more information on the Bird-X website.