Continuous fragrance is just an outlet away with the Glade PlugIns Scented Oil Warmer. Simply plug in this warmer into your wall outlet for long-lasting fragrance that's adjustable to fill any room with your favorite Glade fragrances. The scent lasts up to 50 percent longer when used on low setting as compared to previous Glade warmer system. Adjustable oil warmer is designed for use with Glade scented oil refills (sold separately).