UNBELIEVABLY EFFECTIVE!
I was skeptical of this product, since the reviews seemed to run 2/3 favorable and 1/3 unfavorable. I can't imagine why this didn't work for some people, except perhaps they were trying to use this little outlet model for too large of a space. I plugged it in right behind my washing machine in our 12' x 6' laundry room that houses our kitty's litter box. The box is right by the door to the garage, so the smell hit us between the eyes every time we walked in from the garage. Even after a few hours of running, we noticed a fresh cleanness about the room that has never been there since the day we added the litter box. Unbelievable! I am VERY happy I purchased this product and highly recommend it for smallish rooms like this. I have not tried the floor models for larger spaces, but if they work as effectively as this, I would recommend those too.
Rating: 5 stars