My son wore Pull Ups at night until he was around 8 or 9. I think he was such a sound sleeper that he couldn't wake up in time to make it to the bathroom. I think boys tend to have more of a problem with controlling the muscles responsible for being able to "hold it". My daughter didn't have as much of a problem as my son did. What I used to do, is get him up and take hime to the bathroom, about 90 minutes after he went to sleep. The average sleep cycle is about 90 minutes, so I figured I would catch him in between cycles and maybe he'd be a little more conscious, to walk down the hall to the bathroom. Also, I figured his body would have had more time to digest whatever he had eaten or had to drink, before bed, so the likelihood of him having to go was pretty high. I hadn't gone to bed yet, when I would do this, so it wasn't like I had wake myself up to do it. We had good luck with this and he stayed dry through the night. I've also heard of people raising the foot of their child's bed, slightly, to relieve pressure on their bladder, so that they might not have such an urgent need to go. I never tried that, though.