You might kindly talk to your brother about how you’ve been feeling. He may not realize that a messy room upsets you. Perhaps the two of you can agree to put things back right away when you are finished using them.
You might also try inviting your brother to join you when you clean. You could even turn cleaning into a game you both enjoy. For example, you could turn on some music and see who can put away more things before the song ends. It’s a fun competition, and you both win a clean room!
Art by: Keith Frawley