It's a tough problem that isn't talked about much, well at all!
My DS2 just turned 7 and before Xmas he was wetting the bed more nights that not. Our Dr wrote a script for some kind of wafer that melts in his mouth and tells the bladder to hold it in for hours (don't hold me to that info!). I filled the script but never gave it to him as just talking to the doc seemed to help. But in the past month he has started wetting the bed again, say once or twice a week. I need to find those wafers!