I would just caution that this is NOT appropriate for a child that has underlying disorders as it is punishing them for something that truly is out of their control. It's a perfectly fine consequence for a child that is being lazy or is just trying to be a 'pain' for kicks though!
That's what I mean though, mom doesn't want to take him to dr to see if there is any underlying issues. She just expects me to put up with it, clean him up, oh and this is the kicker....she doesn't want me to punish him at all for it!