In your household and there are all kinds of households (roommates, families, spouses, best friends), vow to make ONE rule above most of the others: Whoever makes a mess in the common areas (shared spaces)has to be the one to clean it up NOW, not later on!! And you have to hold them accountable. Don’t do it for them. And stay civil about it. Remember if you all agree to that rule, you are only just reminding them that they agreed.