My son is 3years 3 months. He wees in the toilet and is occasionally dry through the night. But he will not poo in the toilet. It's not that he refuses to sit on, he just doesn't say anything and poos in his pants. He has never used a potty and he is not scared of sitting on the toilet, We encourage him to tell us when he needs to go, talk about it, let him watch us and we have tried bribery. It just doesn't bother him and we are at a loss at what to do next - please help!