I was just thinking...maybe the term 'clean' is subjective. When I think my place is a mess, and someone happens to be over, I apologize for the mess, but they don't see the same thing I'm seeing. For me, clean is spotless. Everything is clean and put in its place and the house smells like roses. Anything short of that is filthy to me. But I guess it's good enough that you could come over without feeling disgusted.