Hi, my ds1 is 3 and although he his potty trained during the day, he will not poo on the toilet, i have tried everything from totally refusing to put a nappy on, to sticker rewards, so far nothing has worked. If i refuse to put a nappy on, he will just hold it in until he goes to bed, or sometime he doesnt poo for days. then he becomes very constipated as you would expect, even when he does go for a poo in his nappy it is only a very small amount and very smelly (tmi, sorry)