Until about a month ago Mr4 flatly refused to wipe his own bum. If I told him to do it himself he would sit on the loo screaming for as long as it took for me to crack and do it for him.
Now he does it himself but without the wiggles wipes he doesn't do a great job so I usually ask him if I can check and finish it up if needed.

He's pretty good with hand washing unless he's in a hurry.