Rabbits toilet where they eat — use that
A rabbit naturally grazes and passes droppings at the same time, and most rabbits pick one or two corners for urine. That combination makes rabbits one of the easiest small pets to litter train once you work with it: a generously sized tray, lined with paper-based litter and topped with a thick layer of hay, placed in her chosen corner. She hops in to eat the hay and toilets while she is there. A small cat-sized tray she must squeeze into will fail; she needs room to sit fully inside, turn around, and settle to graze, so choose a large tray or a low storage box with one side cut down for entry.
Set up small, then expand her territory
Begin in a pen or one room rather than giving a new rabbit the whole house. Put the tray in the corner she is already using — if she picks a different corner after you place it, move the tray to her corner rather than fighting for yours. Add a second tray if she insists on two spots. Put stray droppings into the tray daily so it smells like the toilet, soak urine accidents on carpet, clean them with a vinegar-and-water solution, and block that spot temporarily if she returns to it. As her tray use becomes reliable over a week or two, enlarge her area gradually, adding a tray in any new room she spends long periods in.
Litter that is safe for a hay-eating rabbit
Use paper-based litter, compressed paper pellets, or plain hay over newspaper in the tray. Never use clumping clay cat litter — a rabbit nibbling litter while she grazes can swallow it, with a real risk of gut blockage — and avoid pine or cedar shavings, whose strong oils irritate rabbit airways and strain the liver. Refresh the hay on top daily, because yesterday's hay is not an incentive, and change the litter itself every day or two depending on size; a tray that smells strongly even to you will push a fastidious rabbit to find a cleaner corner elsewhere. In multi-rabbit homes, provide at least one tray per rabbit plus a spare.
Neutering and age change the odds
Unspayed females and unneutered males spray and scatter droppings as territory markers, and no training method fully overrides hormones. If your rabbit is spraying vertical surfaces or leaving droppings in deliberate trails, book a neutering discussion with your veterinarian; habits often become near-perfect within weeks of the operation as marking fades. Baby rabbits, like all youngsters, are unreliable until around four to six months, so keep youngsters in an easy-clean pen and praise progress without expecting perfection. Elderly or arthritic rabbits may need a tray with a very low cut-down entrance rather than retraining.
Toileting changes that mean a vet, not training
A rabbit who stops using her tray and instead sits in her urine, strains, produces far less urine, or leaves wetness under herself needs a veterinarian promptly — urinary infection, bladder sludge, and mobility pain all break litter habits in trained rabbits. Likewise, far fewer droppings than usual alongside tray avoidance can signal gut slowdown, which is urgent in rabbits. Note when her habits changed and how much she is eating, and get her seen rather than assuming she has become lazy or spiteful; rabbits do neither.
A litter system only works while the tray stays inviting, which means daily hay top-ups and regular litter changes that are easy to forget in a busy house. Assigning those jobs in KinsLe through Care Teams, so each clean is owned and marked done, keeps her chosen corner fresh and her training on track.