Best bed wetting alarms out there for kids?

My daughter wet the bed until a year ago also. She was 10. I am not sure an alarm will fix the problem, I haven't seen a bed wetting alarm that went off before they actually started going. We did keep her to a minimum by getting an alarm clock with dual alarms. We set one for 3 hours after her bedtime and one for when she had to get up. This seemed to work except for on nights when she would have milk for dinner. Of course one year ago we moved and when we moved we quit buying milk simply because we didn't like any of the milk we found here. So maybe milk and milk products is a culprit.