My DS1 was very, very late in potty training. We tried on and off since he was two but he only finally cracked it about four months ago when he was three and a half. However, he while he's fine with wees, in four months he's only pooed on the toilet twice. The rest of the time he does it in his pants. He always says sorry and says he'll do it on the toilet next time but never does. He never gives any clues as to when he needs to go - no facial expressions or hopping around - and doesn't go at the same time every day so it's difficult to anticipate. We're now trying good old bribery with a sticker chart. If he gets ten stickers, he gets a toy that he really, really wants. I've gone so far as to actually buy the toy and it's sitting in the bathroom as an incentive but even that hasn't worked so far. Does anyone have any suggestions? Is he just lazy or could there be a medical reason why he doesn't know he needs to poo?