I have tried this cat litter for two weeks and it works great. I have two litter boxes, and I gradually let them get use to the Crystal litter. I used my usual litter brand  in one box and the Crystal litter in the second box. By the end of the first week, my cats (I have three) would only use the Crystal cat litter.  At the beginning of the second week, both litter boxes had the Crystal cat litter in it. There is no smell in my basement (that's where we keep the litter boxes). Excellent litter to eliminate smells from you cat(s).