The kids did not clean up the basement. Today, they had to clean up. We all got into cleaning the house. We all worked together today. It takes all of us. The kids are old enough to help out around the house.
These are skill that they will need when they are on their own. In order to be able to function, they will have to have order. There is no order in a house that is not clean. When things get too far, it takes too much effort to clean up.
Everyone wants a clean house, but no one wants to put in the effort. Taking care of everything is draining. If we divide up the chores over time it all gets done in an orderly fashion. Divide and conquer makes clean up a lot easier. It builds their character and is good for them. They learn that not everything will be handed to you in life. You have to work for what you get. You have to clean up before you can play.