An Air Wick Freshmatic unit is a battery powered automatic spray, releasing a fragrant burst of scent into your home at regular intervals. The gadget can be adjusted to spray more or less frequently depending on your preference. Freshmatic gadgets are compatible with all Freshmatic refills with a range of fragrances available so your home will always smell fresh and inviting for family and guests. This unit comes with a free refill included, lasting up to 50 days. When your Freshmatic unit runs out of spray, you can simply replace it with any one of Air Wick's Freshmatic refills. Try a new scent for an easy way to add variety to your space, or replace with a tried and true favorite. Simply remove the old fragrance can and insert the new one into the unit with the nozzle facing outward until you hear a click. To remove fragrance, unplug unit and firmly pull the can down. About Air Wick Developed in 1943, Air Wick was one of the first odor eliminators and left homes smelling clean and fresh. Today, Air Wick products are available in a variety of formats and fragrances, from robust automatic sprays to indulgent candles, so you can ensure your home always smells fresh and inviting and creates just the right atmosphere to enhance your mood.