I tried this with my 9 yr old. It only made him go alot more at night. Only made things worse. DID NOT work at all. In fact, because of the issues of urine in the bed and carpet, I told him he would have to wear pull-ups at night. (I've tried bedwetting alarms, to no avail.) Well, he certainly did not want to wear what he called "baby diapers". I told him if he was dry for a month, he wouldn't have to wear them anymore. It's been week and a half, and he's been only wet twice, whereas it's usually almost every night. It seems in my son's case, it's mind over matter.