Reiterate what everyone says about treats for potty training. Candy, icees, play time, etc. were used as a way to get him to use the bathroom more often. Also, my son was really big into superheroes when he was training (still is) - so we let him go to the store and pick out his underwear - he chose Batman, Superman and Avengers underpants, and since he chose them, he liked them and wanted to pick them out and wear them. We instituted a policy that if he had an accident in the the underpants, we would throw them away - he lost about 5 pairs, that was it. Also, while somewhat disgusting, we put 2 kiddie toilets around the house in places that he likes to play so he wouldn't have to go far to be near a potty - while that helped, he still prefers to use the kiddie potties, and that is kind of a pain to clean.