Pretty cool device. Bought because I smoke in the car and can't always open the windows when driving. It smelled nice as soon as I unpacked it, but when I plugged it in, I couldn't really smell it. I almost never drive, except to and from work (15 minutes one way) or walking around the shops, so I don't think I spend enough time in my car to actually tell if it does anything - anything. For that reason I sent it back and bought a wonderful odor neutralizing spray from a local store which has worked great for me and cost me many times less.
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