The Air Wick adjustable dial has 5 fragrance levels. By turning gray fragrance adjustment dial on top of warmer clockwise or counterclockwise, the teardrop aligns with holes large to small (see image below) representing more or less fragrance by exposing the wick to more or less heat. Increasing fragrance level occurs when more of the internal Air Wick’s fragrances smell more natural than perfumy. And each refill lasts for 60 days if kept on the lowest setting. So this one pack can potentially last 360 days. The warmer is designed to release fragrance upwards and outwards. This leads to full and balanced fragrance coverage throughout the room. Pros. One 2-ounce bottle will refill at least 2 plug-in's. The average price for a plug-in refill from the store is about $2.00, so that is a savings of $1.00 or more per refill. Advertisement. You can only refill your plug-in bottle once before you need to throw it away. The wick won't last through more than one refill. We follow our natural instincts. Fragrance can have powerful effects on our mind and mood. That’s why we bring the refreshing, invigorating, soothing, scents of nature into your home. Our products are designed to deliver odor neutralization while creating an environment that’s uplifting and welcoming. Air Wick Plug in Scented Oil Refill, 5 ct, Brown Sugar and Vanilla, Air Freshener, Essential Oils, Fall Scent, Fall decor 4.7 out of 5 stars 27,029 13 offers from $10.98 These plug ins are less messy and work just as well. MelH. 0 0. Air Wick Plug in Scented Oil Refill, 7 ct, Lavender, Air Freshener, Essential Oils. Sponsored. $14.98. The Air Wick Scented Oil warmer also allows you to choose between 5 fragrance settings for just the right amount of fragrance. It continuously diffuses and carefully blends fragrance throughout your home, office, or any space. Easy Adjust with 5X fragrance settings. VALUE: Provides up to 60 days PER REFILL of continuous and long-lasting Scent Fill Fraser Fir & Fresh Balsam Pine Plug in Air Freshener, Scented Oil Refills, 4 Refills Visit the Scent Fill Store 4.2 4.2 out of 5 stars 2,314 ratings m1Yp.