Plug this oil warmer directly into any outlet to freshen the room with pleasant aromas from any Air Wick essential oil refill. This Air Wick oil warmer provides an adjustable level of fragrance for up to 45 days to help keep your facility smelling clean. Scented oil warmer unit delivers consistent, long-lasting fragrance to any room. Comes with a rotating plug for horizontal and vertical outlets leaving the second outlet free. White oil-warmer unit. Safety Data Sheet . Allows for control of the fragrance level. Disperse essential oil fragrances throughout the home, school, lobby or office with this Air Wick scented oil warmer dispenser.