Say goodbye to bad bathroom odors! This compact, battery-operated Toilet Air Purifier quickly eliminates unwanted odors, leaving an odor-free bathroom for you and your family. Simply attach it to the outside of your toilet bowl, and the built-in motion sensor will turn it on automatically when you enter and turn it off when you leave. There are no harmful chemicals or sprays. The replaceable filters are made with a natural compound that is safe for families and pets. Comes with a filter and 4 "AA" batteries. Plastic. 5½"L x 4¼"W x 4½"H.