Yikes!

This morning started with a nosebleed! (sorry - no photos...)
Fortunately, it ended pretty quickly, with no other casualties!
Another Monday, and no new job, or offers, or anything. It's a beautiful day, though, and I believe I will get something done in the yard. Hopefully my son and his wife will get some housework done also, like they agreed to do when we allowed them to stay here.
So, we put together a rental agreement, and they have yet to agree to it! How do you boot out your non-compliant adult kid and his wife when they have a darling baby girl who will assuredly suffer if they take her also? I say: IF, because we have offered to keep her here until they get on their feet somewhere else. They (naturally) did not find that offer attractive... however practical it may be.
We ask them to keep their room tidy, and currently their piles of clothing, etc. are not only obliterating the floor in their room, they are spilling out into the hallway and the "spare" room next door. Perhaps I will offer to throw away anything that ends up in the hall. But of course, that will only spark strife, and I can't take any more of that. I like a peaceful house.
So here's a questions: Am I trading cleanliness for peace? Is that a reasonable trade?
Maybe I will post some pictures of their mess, just to memorialize it! On day, I am sure they will "grow up" and realize they can't live like that - that it is an unhealthy environment for them AND their daughter.
Arggh! Sometimes it is so frustrating! I am looking for suggestions from all you readers out there (both of you)... and something more practical than "Put your big girl panties on and show them the door!" Tough love is tougher than it sounds....