My nearly 3 yr old is quite happy using his potty to wee without any prompting or reminding and hardly has any accidents, we've only been potty training for a couple of weeks. But he wont poo on his potty?? He just does it where he's stood...literally! Ive tried explaining to him 2 try 2 use his potty and even told him he will get special treats if he does but nothing works....he's done it twice (so he knows he should) but more often than not doesnt. Anybody any ideas??