If your child is potty-trained during the day, it can really take a while before the potty-training also works at night. Of the group of children who are five years old, approximately 15% are still bedwetting at night once a week and this is actually not uncommon until the age of seven. So don’t worry, but you can train it. Potty training requires a lot of patience and consistency. Start by buying enough waterproof mattress protectors. This keeps your child’s mattress clean, otherwise you will need to replace the mattress in no time!