Not the greatest
It doesn't seem to do what it's advertized to do. I use it in my office (approx. a 10x10 room) and it doesn't seem to get rid of smells like it says it's supposed to. If my trash is not emptied every evening it smells in my office the next day. The door to my office stays shut at all times when I'm not in it so this product shouldn't have a problem cleaning the air in a 10x10 room that's closed up all night. I will say, knock on wood, I haven't gotten sick as often as I used to...that's worth the two stars.
Rating: 2 stars