my cats are 7 & 8 years old and Ive never brushed them or had them cleaned. I have been meaning to get them cleaned so I can start brushing them weekly because I know they would let me, but I just havent yet. :-/ I think I'd better do that before they get much older. Felix is such a fradey cat though, that Im afraid he'd have a heart attack before we could get him anesthetized....