I have a boy who's turning 4 next month. After the grandma said that she would be training all weekend (about 6 months ago) I started putting him on the potty on Monday. He went on the potty and was screeching to be let off. But I kept going with it and now he tells me when it's time to go on the potty. He still wears pull-ups but stays dry all day. The parents have never to this day put him on the potty at home. He told them he would go on the potty at home when he's 4. He's actually been changing his pull-up himself at home!