Doesn't help with litter box ammonia
I bought this for a small bathroom where the litter box is.  I kept the door only open enough to let the cat come and go.  After a couple days I didn't notice any difference.  So I moved it beside my bed to see if it would help with my allergies which have been horrible lately.  It didn't.  And it is pretty noisy.  The wife says it has to be moved out of the bedroom.  But I don't know where it would be useful. So It goes to the stuff that didn't work pile in the basement.  Time to look for a good old carbon air filter.
Rating: 2 stars