When you go to someone else house, whether for a play date or the holidays, and LO makes a mess do you tell them to clean up?

Whenever BIL brings his girls over he never tells them to clean up. If I don't say something like "OK, girls! It's time to clean up!" he will leave with them and leave behind their mess. And they tear the house up! It's so frustrating to me!

When my family or mom friends come over with their kids they always tell their kids to clean up before leaving. I think it annoys me more because BIL is a clean freak but since it's not his house he doesn't care.