I can't tell a difference
We put this in our bedroom next to the dog's bed hoping to cut down on the "dog smell" in our room. After one month of constant use I can't tell a difference. Our bedroom is 13' x 14' so maybe the space is too big? And the sound of the fan running is a very low hum. It doesn't bother us at all but I do think it may annoy people who require absolute silence to sleep. Overall, I am underwhelmed.
Rating: 2 stars