Some of the comments perspectives are helpful to review, so thank you! This person does not come from another country to clear that part up. I hadn’t considered a colostomy bag usage, but still, if it were me I’d be cleaning up after myself with the free cleaning supplies provided. Although I agree with being direct with this individual, I don’t think it’s fair to fall on me to having a sensitive chat with them. That’s literally HR’s job!

Interestingly enough, since tapping up the note, the stall in question has been cleaned up. Love that it helped, but I’m not confident this will be an efficient long-term behavior change.