Although I can't be 100% sure there's nothing medical (I do have a gp appointment coming up) I'm pretty sure it's behavioural as he's showed ability in the past. I think he just can't be bothered, he's happy just carrying on playing and weeing or pooing in his pants. Maybe it's an attention thing as he is difficult in other ways and has a younger brother, who's one to complete with for my attention. I've just had enough though. I spend my whole day washing his clothes and trying to persuade him to go to the toilet. I've tried everything in terms of encouragement (bribes), nothing motivates him. I've just changed him for the third time today. I've left him naked from the waste down and told him if he can't use the toilet he'll have to wear a nappy and handed him a nappy. He's gone ballistic now and is having a half naked tantrum having thrown the nappy in the bin. I know approach probably isn't advised but I'm just sick of it. What can I do when nothing is working?!