Leave a lasting impression on guests and ensure a consistent experience with Air Wick Scented Oil Refills with Essential Oils. Keep supply rooms stocked with the pleasant scents your guests come to associate with your business. Get up to 60 days per refill, on the lowest warmer setting, of natural-smelling fragrance with essential oil-infused formulas. Easily refill the Air Wick plug-in warmer by unscrewing the cap and inserting the refill until it clicks. Adjust the warmer settings to ensure the optimal fragrance for each room. Enhance entrances, common areas, offices, breakrooms and guest rooms with pleasant scents.