Mine is 5 years old and would still sometimes wet the bed.Once, i told him that if he wet the bed that night, he would have to wear diaper to school the following morning and night.He protested and screamed "NO"!He stayed dry after…! I still constantly remind him that if he wet his bed, diaper is what he is wearing to his school, i am not sure if i am cruel by threatening him like that but this is so far, the most effective way to let him stay dry through out…