Well, I just moved into an apartment and I have some major problems. I am allergic to cats and it seems the person in there before us had some! We are in the process of shampooing the carpets, but I am looking for other advice on how to get rid of it ALL. I have never used one of those ion clean things, but I am wondering if they would help in this case. If so, are there any relatively cheap ones that would do a good job? Any other advice is appreciated, I need to breath again.