How Can I Teach My Cat to Use the Toilet? Toilet & Litter-Box Training

The appeal, and the honest caveat

It is easy to see why toilet training a cat is such a tempting idea, and it is worth acknowledging that appeal honestly before explaining why, on balance, most experts steer owners away from it.

The attraction is obvious and understandable. A cat that uses the human toilet would mean no litter box to buy litter for, scoop daily, and change; no litter tracked across the floor; no litter box smell; and no unsightly tray in the bathroom or utility room. For owners who find litter boxes messy, smelly, expensive, or inconvenient, the notion of a cat simply using the toilet like a person is genuinely appealing, and viral videos of toilet-using cats reinforce the idea that it is a clever, tidy solution. So the desire to toilet train is completely reasonable, and this guide takes the question seriously and will explain exactly how it is done. However, honesty requires leading with the important caveat: the consensus among veterinarians and cat behaviourists is that toilet training is generally not in a cat’s best interests, and many actively recommend against it. The reasons, explored in detail below, come down to a cat’s natural instincts, its health, its safety, and practical realities, and together they mean that the tidy convenience for you can come at a real cost to your cat. That does not make it your decision alone any less valid to explore, but it does mean an informed choice should weigh the downsides seriously rather than being swayed only by the convenience. So consider this guide both a how-to and, more importantly, a why-you-might-not, so you can decide with the full picture in front of you.

How toilet training is done

For those who want to understand the method, whether to attempt it or simply to know what it involves, toilet training a cat is a gradual, multi-week process of slowly transitioning the cat from a litter box to the toilet, and it must be done in patient stages.

The standard approach moves in small steps, only progressing when the cat is fully comfortable at each stage. First, the litter box is moved right next to the toilet so the cat gets used to going there. Over the following days and weeks, the box is gradually raised, using stable platforms such as sturdy boxes or books, a little at a time until it sits at the height of the toilet seat, teaching the cat to jump up to reach it. Next, the raised box is moved so it sits on top of the closed toilet lid, so the cat learns to hop up onto the toilet itself to use the box. Then the box is replaced with a special toilet-training tray or bowl that fits under the raised toilet seat and holds a small amount of flushable litter, so the cat now perches on the seat and eliminates into the tray. From there, with training kits designed for the purpose, the amount of litter is gradually reduced and a hole in the centre of the tray is progressively enlarged over stages, so the cat learns to balance with its paws on the seat and eliminate directly into the water below, getting used to the shrinking litter and growing hole. Finally, once the cat is confidently balancing and going into the water, the tray is removed altogether and the cat uses the bare toilet. Throughout, each step should be slow and only advanced when the cat is settled, and any stress, reluctance, or accidents mean going back a step or pausing; the whole process can take many weeks, requires real patience, and, importantly, not every cat can or will complete it. So the method is a careful, gradual escalation from litter box to toilet, but as the next sections explain, whether it should be done at all is another question.

Why it goes against instinct

The first and most fundamental reason experts are wary of toilet training is that it asks a cat to abandon one of its deepest natural behaviours, so understanding this instinct explains a lot about why toilet training can be problematic.

Cats have a powerful, innate instinct to eliminate in a loose substrate and then to dig and bury their waste. In the wild, cats scratch a hole in soil or sand, relieve themselves, and cover it over, both to keep their living area clean and, importantly, to hide their scent from potential predators and rivals, and this burying behaviour is deeply ingrained and begins naturally in kittenhood without being taught. A litter box satisfies this instinct perfectly, giving the cat a substrate to dig in and cover its waste, which is exactly why litter training is usually so easy: it works with the cat’s nature. A toilet, by contrast, offers none of this. The cat cannot dig, cannot bury, and cannot cover its waste; it must simply balance over open water and eliminate, which is entirely foreign to its instincts. For many cats this is unnatural and can be a source of stress and frustration, denying them a behaviour they are strongly driven to perform. Some cats never accept it at all, and even those that learn to use the toilet are doing something that runs counter to their nature. This instinctual mismatch is the root of several of the other problems, the stress, the potential for aversion and accidents, because you are asking the cat to override a fundamental, hardwired behaviour. So the first strike against toilet training is simply that it fights the cat’s instinct to dig and bury, whereas a litter box honours it, which is a large part of why behaviourists consider the litter box the more natural and welfare-friendly option.

Losing a health-monitoring tool

Perhaps the most compelling practical argument against toilet training, and the one vets stress most, is that it takes away a valuable, everyday means of monitoring a cat’s health, which can lead to illness being spotted later than it should be.

A cat’s litter box is, in effect, a daily health report. When you scoop a litter box, you regularly see and assess your cat’s urine and stool, and changes in them are often the earliest and clearest signs of illness. The size and number of urine clumps tell you whether the cat is urinating more or less than usual; blood in the urine, or a cat straining and producing only tiny amounts, can reveal urinary tract disease, cystitis, or a dangerous blockage; changes in stool, diarrhoea, constipation, blood, or unusual frequency, flag digestive or other problems; and shifts in overall output can point to kidney disease, diabetes, and more. Because cats hide illness so well, these litter-box clues are frequently the first hint that something is wrong, giving you the chance to seek veterinary help early. Toilet training removes this window almost entirely: when a cat eliminates directly into toilet water, its urine is diluted and dispersed and its stool drops into the bowl, making it far harder, often impossible, to notice the amount, appearance, blood, straining, or changes that a litter box reveals at a glance, and any waste is typically flushed away unexamined. As a result, urinary, kidney, digestive, and other conditions can progress further before they are noticed. For a species that conceals sickness by nature, losing this simple, passive monitoring is a genuine health disadvantage, and it is a key reason many vets advise keeping cats on a litter box, so that the daily scoop continues to serve as an early-warning system for illness.

Physical risks and practical problems

Beyond instinct and health monitoring, toilet training carries some concrete physical risks and everyday practical drawbacks that add to the case against it, particularly for certain cats and households.

Physically, balancing on a toilet seat is not easy or safe for every cat. Kittens, elderly cats, and cats that are overweight, arthritic, or have any mobility or joint problems can struggle to jump up and perch on the seat, and there is a real risk of a cat slipping and falling into the toilet bowl, which is frightening, can cause injury, and often creates a lasting aversion to the toilet (and sometimes to toileting generally). Even an agile cat can have an accident. Practically, toilet use is inconvenient and unreliable in many homes. The toilet must be kept available whenever the cat needs it, meaning the lid up and the bathroom door open at all times, which many households cannot or do not want to maintain, and if the lid is down, the door shut, or the bathroom occupied when the cat needs to go, the cat has nowhere acceptable to relieve itself and may have an accident elsewhere. Toilet training also tends not to work well in multi-cat homes, where sharing a single toilet is impractical and the instinctual conflicts are multiplied. And the training process itself, and the unnatural end result, can stress some cats into developing litter-box or toilet aversion and eliminating around the house. Taken together with the instinctual and health concerns, these physical risks (especially to vulnerable cats) and practical failures (lids, doors, multi-cat homes, occupied bathrooms) mean toilet training can create as many problems as it solves, which is why a reliable, always-available litter box is generally the more dependable and cat-friendly arrangement.

The expert verdict

Pulling the concerns together gives a clear overall verdict, and it is worth stating plainly so that anyone weighing up toilet training can see where the balance of expert opinion lands.

The considered view of most veterinarians and cat behaviourists is that toilet training is generally not recommended, and that a clean, well-managed litter box is the healthier, safer, more natural choice for the great majority of cats. The reasons stack up: toilet training overrides the cat’s strong natural instinct to dig and bury its waste, causing potential stress; it removes the litter box’s role as an early-warning system for illness, so urinary, kidney, and digestive problems may be missed; it poses a physical risk of falling and is especially unsuitable for kittens, senior, overweight, or arthritic cats; and it is impractical or unworkable in many real households and multi-cat homes, with the potential to cause aversion and accidents. Against all this, the only real benefit is convenience for the owner, no litter to buy, scoop, or clean up, which, while understandable, does not outweigh the welfare and health costs for the cat. This does not mean toilet training is impossible or that no cat has ever done it happily; some cats are trained successfully. But the honest, informed conclusion, and the one this guide recommends, is that for most cats and most homes, the drawbacks make toilet training a poor trade, and that the better path is to make peace with a litter box and set it up and maintain it well, which is easy for the cat and keeps its health visible. The rest of this guide focuses on doing exactly that.

Litter training instead

Since a litter box is the recommended approach, the good news is that litter training a cat is usually easy and works with, rather than against, the cat’s instincts, so it is far simpler than toilet training and much better for the cat.

Because cats have such a strong natural drive to use a loose substrate and bury their waste, litter training is mostly a matter of providing a good box and gently guiding the cat, and most cats essentially train themselves. For a kitten (which can start using litter from around three to four weeks old) or a newly-arrived adult cat, set up an appropriate box: choose one with low sides a kitten or older cat can easily climb into, fill it with a couple of inches of a fine, soft, unscented litter that cats generally prefer, and place it in a quiet, easily accessible, low-traffic spot away from the cat’s food and water. Introduce the cat to the box by gently placing it in there so it feels the litter, especially at the times cats commonly need to go, after meals, on waking, and after play, and most cats will begin digging and covering instinctively almost at once. Reward the cat with calm praise when it uses the box, and crucially never punish accidents, which only creates fear; instead, clean any accident thoroughly with an enzyme cleaner to eliminate the scent (so the cat is not drawn back to re-use the spot), and check that the box itself is clean, accessible, and correctly set up, since the great majority of ‘training’ failures are really problems with the box rather than the cat. It helps to keep a new cat in a smaller area at first with its box close by, to establish the habit before giving it the run of the home, and in multi-cat households to provide one box per cat plus one extra. With a suitable, clean, well-placed box that works with the cat’s instincts, litter training is quick and easy for almost every cat, which is exactly why it is the sensible, welfare-friendly default over toilet training.

If a cat won’t use its box

Sometimes a cat stops using, or refuses to use, its litter box, and because this is both a common worry and a potential health signal, it is important to know how to approach it, starting with ruling out illness.

When a cat will not use its litter box, the cause is usually either a medical problem or something about the box or environment, and because a sudden refusal can indicate illness, a vet check is a wise first step. Medically, urinary tract infections, bladder inflammation (cystitis), crystals or stones, kidney disease, diabetes, and arthritis (which can make climbing into a box painful) can all lead to box-avoidance, and a cat, especially a male, that is straining with little or no urine is a medical emergency needing immediate care. Once health issues are excluded, examine the setup, where most fixable causes lie: a dirty box (cats are very clean, so scoop at least daily), too few boxes (provide one per cat plus one), a poor location (too busy, noisy, near food and water, or hard to reach), a box the cat dislikes (wrong size or type, covered when it prefers open or vice versa), a litter it does not like (many cats prefer fine, unscented litter and reject scented or coarse types), or high sides that an older or stiff cat cannot manage. Stress and changes in the household can also trigger box-avoidance. The fixes follow from the causes: after a vet has ruled out illness, ensure a clean, appealing, accessible box of a type and litter the cat likes, enough boxes in good, separate locations, thorough enzyme cleaning of any soiled spots, reduced stress, and absolutely no punishment. Approached this way, first medical, then setup, the large majority of litter-box problems can be resolved, restoring reliable, stress-free toileting.

Going back to a litter box

Finally, it is reassuring to know that litter use is flexible and that even a toilet-trained cat can readily return to a litter box, which is relevant both if toilet training does not work out and as a further point in the litter box’s favour.

A cat that has been toilet trained can be put back on a litter box without difficulty, and sometimes this is genuinely necessary. If a toilet-trained cat becomes elderly, arthritic, overweight, or unwell and can no longer safely balance on the toilet seat, or if it develops a health problem whose monitoring requires you to see its urine and stool, or if it starts having accidents or shows aversion, the sensible response is simply to reintroduce a proper litter box in a good location. Because using litter aligns with the cat’s natural instinct, most cats revert to it readily, drawing on the very behaviour toilet training asked them to suppress, which is one reason some owners who do toilet train keep a box available or in mind as a fallback. It is also worth noting how outdoor access fits in: some cats with access to a garden will toilet outdoors, digging and burying in soil as instinct dictates, and some owners rely partly on this, but an indoor litter box remains important as a backup for bad weather, illness, or times the cat is kept in, and it preserves your ability to monitor the cat’s health and avoids fouling neighbours’ gardens. (Pregnant women and immunocompromised people should take care with cat faeces wherever it is passed, because of the Toxoplasma risk.) The broader message is that the litter box is a flexible, reversible, always-available, health-friendly solution: a toilet-trained cat can go back to it, an outdoor cat still benefits from it, and for most cats and homes it remains, as the experts advise, the recommended and kindest default over toilet training.

Frequently asked questions