Our 5 year old son was a customary nocturnal accidents, and dangerously taking the path of "Serial Pisser" ... Incentives, reprimands, tea, plants, medicine, everything happened almost without result. So it was a last resort as this little device was ordered, and not without apprehension. .. But once received, studied and implemented from the first night, it only took 3 nights to find success !! Our child has simply empowers or self confident and it works. A happy dad.