If 60 dollars is all he can pay than I seriously doubt he can afford an attorney to fight you. I kicked my own son out for the same thing. Don't feel too bad as there is a name for what you are doing or at least there used to be ..It's called TOUGH LOVE. Me giving my son the boot changed his whole life around. I always told both my son's life Is full of choices and some choices you make will cost you. Kick his ass out! You will be doing him a favor in the long run. If cleaning up his room is his biggest issue in life so he has a nice place to sleep and he can't agree to do that then he has issues to begin with. Let him sleep in his vehicle a few nights I bet you see a change in his attitude.