I really believe in the "I said it and won't say it again".
Unless they actually push on the boundary and you have to remind them, don't bring it up.
In this case all I can think of is not the breadcrumbs but the electric fence for dogs. Part of the training towards the end is to put something that they want on the other side of the fence to see If they will cross or not. If they do, then the boundary "training" didn't work and you start back at beginning.
So, the chit storm comment is on the other side, is it worth the pain?
