All girls and boys who wish to stay away from home to study, work or whatever should be educated in maintaining their surroundings clean. It's not difficult. Nobody's asking one to clean the room or kitchen every minute of every day. It's just keeping things tidy appears more sensible than to have them in shambles.
And one feels like eating and preparing edible food in a clean kitchen, than in one which is dirty. I think the onus lies on their upbringing.