Pick up issue

[Lee-Bee]

How annoying! How old are the kids?

A few options (as already noted), none are the best but....you ARE closed.

If they have left, do not answer the door when they come back to poop. Hide upstairs.

Leave at 5pm as they leave. You could go for a walk around the block but personally I would be hitting up the donut store or chocolate store as a reward lol.

Or finally, just let them know now before the end of the day that as of 5pm (or closing time) there is a late fee if they have not left as you are closed for the day and need your alone time. Let them know you have done everything you can to have them poop before they arrive the children are choosing not to and they just need to wait until they are home to retrain them not to wait until the last minute.

I feel like option B is likely best as they are likely the parents that couldn't possibly see why another human being wouldn't want their child hanging around after closing to poop. Being out of the house leaves them no alternative but to make it work without burdening you. After a while of you leaving at closing they will hopefully have forgotten of this routine.