This is amazing! I am a smoker and buy a lot of air fresheners. I thought I would try this instead and am pleasantly surprised at how quickly the smoke smell is gone in my car! And even now in the winter without having car windows open other than a small crack when I smoke, with this item I smell no smoke at all when I get into my car. It plugs into the cig. lighter outlet, but I unplug it when a car is turned off. I'd recommend this item!