Please help. I have been potty training on and off for a while. My ds has complete control of his peeing and pooing and as a result we are now at the stage where he holds in his pees and poos for hours and will not go until a nappy is on and gets very upset when his nappy is off and he needs to spend a penny. He doesn't like sitting on a potty, potty chair loo or loo seat and I have tried everything from bribery to stickers to playing with new toys on the loo. He basically knows what he has to do but is unable to let go. Does anyone have any ideas?