My 9 year old son in diapers?

Wow!! Sounds like some of it is discipline. When they throw a fit, time them out!! If used correctly, it really works, I have four kids, used time outs for all and there great kids. But, you have to follow through. You can't weaken. The whole potty thing is pretty easy, put em' in pull ups. They will get there eventually. Also, they could be using this potty thing for attention. The less said the better. When they mess themselves, just change them, say nothing act like no big deal. Their going to wonder why their not getting all the attention they used to. Eventually tell them they need to change their pants themselves, leave them in their room till they do. You may have a mess, but if you follow through and continue to wait for them to change themselves, no t.v., snacks, toys, nothing till they change their own pull up, it will work. But you need to stand firm and not cave, regaradless of what THEY do!!!! Good luck and hang tough Mom!!