The inmate...

I'm not sure how I feel about this, but the pro technique is apparently to keep the boy in the bathroom all day, and I do mean all day. He's playing there. He's eating there. And he's pooping and peeing on the toilet there. There are jelly beans involved, too.

By the way, nobody sells plastic pants big enough to fit five year olds that I can find. I ordered some expensive but very nice training pants online. Thank you, Imse Vimse.  Everyone else seems to top out at 3T.