At what age was your son fully potty trained (wearing regular underwear, very few or no accidents)? My son is 31 months old, and he has absolutely no interest in the potty. I want to enroll him in a week long summer camp after he turns 3 (5 months from now), and they require him to be fully potty trained. I'm worried he won't be ready by then. I'm curious to hear when other boys were potty trained.