HELP. I've a 2 year old little boy who's nearly mastered his potty training. He tells me he want's a wee all of the time and never has any wee accidents. However I'm having a major problem with him pooing. THe only place he'll poo are his pants or nappy. He'll tell me as soon as he's done it but he won't tell me before. I even tried rewarding him with a toy when he poos on the loo but he still won't do it. Does anyone have any advice????