The Riddex Plug-In Pest Repellent is a 2-pack of electric rodent and roach repellents designed for indoor use. With a voltage of 110V, these white plastic devices are easy to use and operate on electricity. Ideal for any room in your home, they effectively deter pests such as cockroaches, rats, and mice from invading your space. Say goodbye to unwanted critters with the convenient and efficient Riddex Plug-In Pest Repellent. Non-Toxic, No Chemicals, No Poison. Simply plug into any home outlet and turn your home into a pest repelling force field.