I had a highly motivated 9 year old daughter who had never had more than a handful of dry nights in her life. She's getting to the sleepover phase, and we were both worried about what to do. I hesitated to purchase this because it is pretty expensive and her pediatrician kept telling me "Alarms don't work....she'll grow out of it someday." But, finally, after reading a bunch of the reviews here, I ordered this. As so many other people have commented, I wish I had done it sooner!! My daughter wore the alarm starting in July over school vacation, and it woke her up twice a night for the first week. Yes, it was a tough week (for both of us). It was a bit like having a newborn again. I slept close enough to her room to hear the alarm when it went off, and it woke her up every time. I would go in to help her change underwear and re-attach the alarm, put a pull-up over the whole set-up and then we would both go back to sleep. By the second week, she was only wetting once a night, and by the third week, she could manage changing underwear and re-attaching the alarm herself. During the 4th week, she started having dry nights. It was like a miracle occurred! After 6 weeks, she was dry so regularly that we stopped using the alarm and also stopped putting a pull up over her underwear. It was truly a godsend.A couple of things that detractors have mentioned:1. Yes, this is a very simple alarm. It is like a telephone cord connected to a tiny plastic box. Yes, it is probably overpriced for what it is, parts-wise. But it WORKS, and I couldn't build one myself, so whatever it costs, it costs. I really can't put a price on my kid's self-confidence and happiness.2. People in other (earlier) reviews have talked about a huge safety pin that pins the alarm to the jammies and rips them and pinches the child. This is not the case anymore. The nice folks at Malem have evidently changed the design. The alarm clips securely and painlessly to the neckline of the pajamas. It is a bit cumbersome to sleep with, but my daughter got used to it, and after a couple of nights it didn't bother her anymore.3. My daughter woke up every single time the alarm went off. It's not super loud, but when it is clipped next to your head, it seemed to do the trick. I was afraid it would scare her a little, but it didn't. I don't think my daughter is really heavy sleeper, but soaking through the bed sheets and getting wet and cold never woke her up, and yet this alarm did.4. My daughter was very, very motivated. She was absolutely sick and tired and embarrassed of wearing pulls ups to bed. A couple of years ago, it didn't seem to bother her as much (even though it bothered me). This summer, she was ready to conquer her problem and was able to deal with the adjustments and minor discomforts of sleeping with the alarm.5. After reading other reviews and the product guide, I had fully prepared her that it could take 10-12 weeks to really see success, so she was not discouraged early on. As it turned out, she was "cured" much sooner than we had thought.My best advice is....Just go ahead and buy it! Your child will thank you and you will be SO happy when their bed wetting problem is resolved. Good luck and God Bless!