One size really does fit all with this Glade PlugIns Scented Oil Warmer. Continuous fragrance for any size room is just an outlet away. Each fragrance refill lasts up to 30 days depending on the setting you choose. Simply plug in the warmer for long-lasting fragrance that s adjustable to fill any room in your home with your favorite Glade fragrances. Every Glade product brings true-to-life fragrance into your home and the wide variety of devices ensures there s one for all your life s needs.