So my twin boys are 2 1/2. Seem to have some interest in the potty and one wakes up from overnight dry sometimes. However, they absolutely REFUSE any sort of pull up disposable diaper. I think if they actually felt uncomfortable after going in their pants, then they would want to use the potty, but regular diapers are too absorbent for this. I found these online.

http://getantsy.com/antsy-pants-are.html

Anyone have experience with them? Thanks!