text: what room-size air purifier really works, to remove airborne particles? trying to keep kitty litter dust from bookshelves, etc. www.ecoquest.com/natewurm  these are much better than the ionic breeze as they cover more area, 1 unit can purify up to 3000 sqft...as well, they have a $100 off offer if you trade in your ionic breeze for one of the units.  i have the large unit in my home as well as my parents, in laws, pastor, etc....they work great!!!