This has worked great!!
I wasn't sure at first how well this would work but I have to say I love this thing !!  I am convinced that this has made a world of difference for my children with their allergies and asthma.  Shortly after putting this in their rooms I noticed that we were not having to continue breathing treatments and they were not waking up congested and sneezing. One of my  children have an auto immune deficiency, so I personally real think that this is well worth the money.
Rating: 5 stars