I hate to be the bearer of bad news, but in my situation and my son's NOTHING has seemed to work. My son is almost 9 and wets nearly every night. We have been to the docotor who prescribed DDAVP. It did not work. In fact before the DDAVP, he only wet about every other night. He is now after being off the DDAVP for a few months is almost back to only every other night (still alot, but better). He has also seen a urologist who did not want to do anything except the alarms. I HATE THE ALARMS!! I was a bedwetter until I was 18!! Yes, 18! Nothing worked for me either. Also, most of my bedwetting life, I was spanked for being wet. My aunt and uncle (I was living with at the time) did not realize that is was a medical issue. They thought I was too lazy to get up and go to the bathroom. I think the spankings were probably part of the reason I wet the bed so long. But anyway, then as soon as all the puberty changes were through (I was a very late bloomer as well), I stopped wetting the bed. Anyway, the urologist wanted to talk more about my daughter who had had a kidney infection with a fever!! I was so mad. I had made an appointment for my son and they hardly said two words to him. The little bit of advice I got from the urologist was LOTS of fluid during the day hours (before 6pm) (avoid Chocolate, Citrus, Caffine, and Carbonation), use the bathroom every two hours (and make sure ALL is out before getting up), bathroom before bed, and make sure that your child thinks it is as big of a problem as you do. My son does not really seem to be bothered if he is wet or not, so I do not have his cooperation on the liquads, bathroom, etc. The urologist said that until he decided he did not want to wet the bed anymore, it would be pointless to try to get him to stop.
Good luck to you. I hope something works out for you soon. I truly understand. Sorry this was so long.
J.