I had a roommate in college who decided he had enough of our other roommate leaving his dirty dishes out. So one day, he decided to leave the dishes on the floor in front of that roommate's door and said he was going to have to be the one to move them. If the roommate left more out or moved the dishes without cleaning them, they were put back in front of his door. His room was at a major intersection in our house. We were stepping over dirty dishes for weeks.