Most early litter accidents in a tiny kitten are engineering problems, not behaviour problems: the tray is too tall to enter, too far away for short legs and a small bladder, or too deep and unstable underfoot for her to balance and aim in. Fix the setup and accuracy usually follows within days.
An entrance her legs can manage
Pick a tray with one very low side, or cut a wide entrance into a sturdy shallow box and smooth the edge, so she walks in rather than climbing and tumbling. Adult covered trays, high-sided storage boxes, and trays reached by stairs all defeat a kitten at this size, and a hood adds a doorway she must push through while desperate. The tray's floor should be big enough for her to turn around and choose a spot, since kittens circle before positioning; a cramped tray guarantees deposits over the edge no matter how carefully she tries.
Litter depth and type for unsteady footing
Fill shallowly — a modest layer she can stand on firmly rather than sink into, which wobbles her crouch and ruins her aim. Fine-grained, unscented litter is easiest for small paws to dig in and least likely to startle her with perfume, and it shows moisture clearly so you can spot clean often. Avoid clumping litters for very young kittens who mouth everything while exploring, and keep the type consistent through these learning weeks; swapping litter and tray at the same time can undo a habit that was nearly formed.
Placement and the wobbly-aim surround
Put the tray on a quiet, hard floor close to her sleeping and playing area, away from her food and water, with a clear short route she can manage when she wakes suddenly needing it. Expect overshoot: a large washable mat or tray liner underneath, extending well beyond the tray on the side she favours, protects the floor and keeps cleanup to minutes. Scoop promptly, because a tiny tray fills fast and a kitten who finds it dirty will reasonably choose the clean mat instead. Add a second tray elsewhere in her room if misses happen at the far end of her space.
Helping her learn without pressure
Position matters as she grows into the setup: revisit the tray's height and size every couple of weeks, because the pan that suited her at eight weeks will soon cramp her turning circle and recreate the overshoot you solved. Raise the challenge gradually — a standard low tray first, deeper litter later — rather than jumping straight to an adult arrangement. If she consistently misses on one particular side, check that nothing startling stands there, such as a washing machine that starts mid-visit, before assuming the tray itself is the problem.
Place her gently in the tray after meals, naps, and play — the moments a small kitten most often needs to go — and let her climb out freely if nothing happens. Clean accidents with an enzymatic approach of thorough blotting and washing, and never rub her nose in a miss or scold her near the tray, which teaches fear of the location itself. If she strains, cries while toileting, passes blood, or has repeated diarrhoea, that is a veterinary matter rather than a training one. Scheduling the frequent scooping this small tray needs through KinsLe Care Teams keeps it inviting for her, with each completed check timestamped for the next person.