Do not forget to clean.
Don't forget to wash your hands.
Please use the toilet in a clean way.
Don't forget your bag.
The toilet is stuffed up again.
The water in the toilet won't stop running.
Don't forget to bolt the door.
Don't forget your umbrella.
That restroom is being used now.
There is no one in that restroom.
煙草の火を消すのを忘れないでください。
Don't forget to extinguish your cigarette.
Be sure to go to the restroom.