Febreze 3Volution Air Freshener Cotton Fresh continuously fights odours and alternates between 3 complementary scents for freshness you keep noticing. Lasts up to 90 days (if used 12h per day on low setting). Let a sense of calm envelop you as this clean & gentle scent fills the air. With traditional plugs, we get used to to scents quickly and stop noticing them. Febreze 3Volution Air Freshener renews the freshness by continuously & automatically alternating between 3 complementary, high quality scents every 45 minutes. Use Febreze 3Volution Air Freshener refills with the 3Volution Air Freshener Electrical Diffuser to fill your home with freshness and fragrance that you will keep noticing day after day, week after week. 3Volution Air Freshener also lets you adjust the level of scent, helping you to create the ambiance that you want, when you want.