Sorry, didn't mean to post and run, I appreciate all the replies.
I may test playing vanilla for a bit, just to see if the behavior changes. But from what Dijktafone is describing, which is very similar to what I'm seeing, it seems like this is a feature not a bug/mod issue?
I honestly wouldn't mind their obsessive cleanliness, if it only affected their own properties and bodies. Some people are like that, that is fine. But they shouldn't be able to clean other people's homes or public places unsolicited. That's silly, no body does that.