When to start
Most children can manage most of the skills involved from around eighteen months, and research points to coming out of nappies somewhere between eighteen and thirty months as better for bladder and bowel health than leaving it later. Groundwork can begin well before that — from about six to nine months, once a child can sit — though that is familiarisation rather than training.
The widely published alternative is to wait for signs of readiness: two hours or more dry, awareness of needing to go, being bothered by a wet nappy, showing an interest in the potty. The specialist position is not to wait for them, and the reasons are practical rather than ideological.
- Many children never show those signs clearly, and children with additional needs often never show them at all. A list that some children simply do not satisfy is a poor trigger for starting.
- Language is one of the last skills to arrive. Waiting for a child to say they are ready means waiting for a capability that has nothing to do with bladder control, and it can delay things by a year.
- Very few children raise the subject themselves. Almost nobody wakes up one morning and announces that the nappies are finished.
What does matter is picking a reasonably calm stretch. A house move, a new baby or a change of nursery in the same fortnight is a reason to wait a few weeks — not for the child to be ready, but for the household to be.
Groundwork, before nappies come off
Sort out constipation first. This is the step most often skipped and the one that decides the outcome. Checking daily that poo is soft, and treating anything else before going further, prevents most of the stalling that gets blamed on stubbornness. A child who associates going with pain will hold on, and holding on makes the constipation worse.
Drinks. Plenty of water-based drinks through the day, working up towards six to eight. A child who drinks very little has a bladder that is rarely full enough to produce a clear signal, which leaves nothing to learn from.
Change nappies promptly. Modern nappies are designed to keep a child feeling dry, which is comfortable and unhelpful. A child who never notices being wet has no sensation to connect to anything. A folded cloth inside the nappy restores some of the feedback.
Talk about it plainly. Ordinary words, used in the bathroom, as things happen. Worth avoiding entirely: describing poo as smelly, stinky or dirty. The aim is a child relaxed enough to sit down and let go, and disgust works directly against that.
Short spells with no nappy, up to about half an hour, with the potty visible and in reach.
Practice
Offering a sit at the moments something is likely — after waking, after meals, and whenever a child is visibly straining — teaches the association without any pressure to produce.
It is worth knowing that this is not one skill but something closer to forty: noticing the feeling, getting to the right room, getting clothing down, sitting, staying put, letting go, wiping, flushing, washing hands. They arrive separately and in no fixed order, and a child who can do most of them and not one of them is making normal progress rather than failing.
Loose trousers work better than pants at this stage, because getting clothing down in time is its own obstacle and not the one being worked on.
Boys sit down for both at first. Standing is a later refinement; introduced early it makes the business of recognising the need to poo harder, and complicates the aiming for no good reason.
Stopping nappies
Once the groundwork is in place, the switch itself is fairly undramatic. The things that matter:
- Guide, rather than prompt constantly. Steering a child to the potty when they show signs of needing it is the point. Asking every twenty minutes makes it the adult's job to track, which is precisely the job being handed over.
- Do not put a nappy or pull-up back on for an outing. It is the most confusing move available, because it tells a child the rules change according to location. Spare clothes and a bag are the alternative.
- Naps come after daytime dryness, and nights later still — often much later, and not through any effort on anyone's part.
- Do not wake a child in the night to use the toilet. It does not train anything, and where bedwetting is the concern it works against the thing it is meant to fix.
Accidents
Accidents are part of learning this rather than evidence that it is going wrong. The useful response is unremarkable: clean up together, matter-of-factly, mention the potty, and carry on. Pretending it has not happened teaches nothing. Making a scene teaches something worse.
Shaming and punishment have no place here, and not only for the obvious reason — stress makes the physical process harder as well as the emotional one, so a child under pressure is a child less likely to manage it.
Where progress stalls altogether, the first two things to check are constipation and fluid intake, before any change of approach. And stopping is allowed: going back to the groundwork stage and restarting weeks later is a recognised option rather than a defeat.
How long it takes is not three days, whatever is being sold under that name. It is a gradual process, and the spread between children is wide.
Rewards, and why they fade
Sticker charts and small treats often work at the start and then stop working, usually fairly quickly. The difficulty is what they leave behind: the thing has become a transaction, and the child is in a weaker position than before, because the original reason to use the potty has been replaced by one that has just expired.
Praise for the attempt rather than the outcome avoids that, and costs nothing when the attempt does not come off.
When to ask for help
- Constipation. Hard or pellet-like poo, pain on going, several days between, or soiling. Soiling in particular is worth naming, because it is routinely mistaken for carelessness when it is usually liquid leaking around a blockage — a child who is soiling is often severely constipated rather than lazy. A GP or health visitor can treat it, and treatment comes before any further potty training.
- Bedwetting after the age of five. Before five it is ordinary and needs nothing. After five it is worth having looked at, because there is treatment and waiting is not the only option on the table.
- A child who was reliably dry and has started wetting again. Infection, constipation and distress all present this way, and it is worth a check rather than a return to charts.
- Additional needs. The approach is the same three stages rather than a different method, with more time and more support built in. A health visitor, school nurse or specialist team can help structure it.
ERIC, the children's bowel and bladder charity, publishes detailed guidance on all of this, including a step-by-step programme and material for children with additional needs: eric.org.uk.
Much of what makes this stretch difficult is the same thing that makes the rest of it difficult — a child who wants to do everything themselves and can do about half of it. Toddler tantrums covers that side of it, and the wider developmental picture, including the signs worth raising with a health visitor, is under baby milestones.