It’s normal for kids in this age group to wet the bed.

If they’re bedwetting it may be because their bladder isn’t yet big enough to store all the wee they produce at night time. Or it may be  because the connection between their bladder and their brain is not yet fully developed. In short, they’re too young to be expected to stay dry throughout the night.

Try not to compare your child with other children in your family, mother’s group or social circle. As with most developmental milestones they all get there in the end and it’s clear that the time between achieving daytime dryness and night time control is different for every child. While some two to four-year-olds achieve dry nights in a matter of weeks, others take months or even years to get there.

Try not to compare your child with other children in your family


  • Encourage your child to drink regularly throughout the day. About 1 to 1.5 litres is recommended for two to four-year-olds. Taper off in the evening, but don’t restrict fluids altogether in children of this age
  • Limit sweet and bubbly drinks, especially ones containing caffeine, such as cola
  • Make sure your child sits on the toilet or potty and fully empties their bladder just before bedtime
  • Stop ‘just in case’ visits to the toilet (i.e. before going out). Contrary to popular belief, it is good for children to ‘hold on’ so the bladder learns to store larger amounts of wee
  • Increase dietary fibre in the form of whole-meal foods, vegetables and fruits to prevent constipation: a full bowel puts pressure on the bladder, triggering the urge to wee
  • Don’t lift sleeping children to take them to the toilet during the night as this reinforces to the child that it’s ok to wee in their sleep and does not give their bladder a chance to learn to store urine overnight

Time is often the best course of action. Most children of this age will outgrow bedwetting on their own.

In the meantime, keep your son or daughter in DryNites® Pants as these keep your child dry and comfortable even if they do pee at least once in their sleep. What’s more, staying dry will help their self-esteem and confidence while reducing the washing workload for mum and dad.

Most children of this age will outgrow bedwetting on their own.
4 year old bedtime nappies or not?
Hi Samantha, Nighttime wetting typically happens when children are asleep and are not in conscious control over their bladder, making it more difficult to train a child to become dry at night. The most common cause of nighttime wetting is a neurological-developmental delay. Young children whose nervous systems are still forming may not be able to know when their bladder...
2yo girl was diagnosed as having low serotonin and is on a serotonin uptake inhibitor. She wets the bed even if she has a short daytime nap. Is this related to the serotonin issue?
There are a number of factors that contribute toward children’s bedwetting. Some children who wet the bed release less vasopressin at night – a hormone that reduces the amount of urine produced. These children produce more urine and are more prone to bedwetting. I am not aware of a direct link between serotonin and the production of vasopressin although this...
Dr Catherine, My Son Jack is 2 yrs old is it too early to start toilet training and if not how do I begin this process.
Hi Kathy - the key to successful toilet training is timing. In order for Jack to succeed, he needs to be physically, emotionally and mentally ready. Physical signs to look out for include reasonably predictable bowel movements, he needs to be able to independently get himself to the toilet and pull his pants down, he needs to be able to...