What do you do with guests that stay later than your checkout time?

[Chris Furry]

Do you have fees that you charge your guests that stay later than your checkout time without asking or requesting it?  We recently had guests stay and our checkout time is 11:00.  At 10:59 there was no movement outside the property.  I could still see trash and some of their personal property still outside.  I text the booker and reminded him of the checkout time.  Around 12:15 they left.  My cleaner was waiting around the corner till they left.  Without risking a bad review what do you have set in your checkout procedures?  

Thanks for the help.