First thing is to get his doctor to make sure nothing is physically wrong. Boys in particular seem to be harder to train, and many children have trouble with night training because they don't get strong enough "signals" from their bodies to wake them up. Perhaps the same thing is going on during the day. Second, my son didn't fully potty train for pooping until he was almost 4. What his doctor recommended was a 20 day plan where the goal is to condition his body to go shortly after eating. You get 20 small prizes, trinkets, candy, whatever and seal them into 20 individual brown bags so the prize can't be seen. Put them all into a basket or box so he can see the bags while he is on the toilet. Then about 10-15 minutes after every meal, he has to sit on the potty for 10 minutes. Use a timer that he can see count down. Make sure he is sitting comfortably, because he must be relaxed for the bodily function to work right. The goal is not for him to necessarily go each time, but train his body to be ready to go after eating. Let him see the basket but not touch. When the timer goes off, he gets to pick out a bag. Do this for at least 20 days, and you should see some improvement IF you send him to the bathroom after every meal. With peeing, just set a schedule and stick with it, to go try every half hour, 45 minutes, etc. Peeing is easier to condition to be regular because they can't hold pee for as long. Try to be neutral and encouraging, and hopefully his body will respond and it will become regular like clockwork. As far as the pullups go, you could try to use them like underwear to protect his clothes and your house while following the above plan. It may help your sanity while the 20 days tick by. ;-) Good luck!