I have two boys, they both have a nocturnal enuresis. One day, we were at the drugstore and they had all those pamphlets. My oldest son, which new how to read, was looking at them. And he saw the one for this company:
http://www.urino-arret.com/indexan.htm
He read it carefully, asked me questions regarding this and told me that peeing in his bed was starting to bug him.

So I called urino arret and tried their machine on both my sons. The oldest one is now peeing at night FREE!!!! But the younger one still pees in his bed EVERY SINGLE night. Sometimes even wet his sheets (with a real diaper!). I can say I have tried EVERYTHING. The only thing that I think really works is when the kid himself has a concern with peeing in bed. Until they do, I think it's pure torture to make them go through this. My youngest son is almost 6 and he doesn't care much about peeing in his bed. When we tried the machine, he cried non stop, refused to wake up when the machine went off...etc...

Good luck with this problem!