The Room the Kitten Lives in Comes First
For the first weeks the tray belongs in the kitten's base room, not in the bathroom at the far end of the house where you would eventually prefer it. A young kitten gets very little warning before needing to go, and a long journey past exciting rooms, closed doors, and stairs ends in accidents that are really geography problems. Inside that room, pick a corner that feels properly sheltered: two walls for backing, a clear view out, and no through-route for feet heading elsewhere. Your kitten should be able to reach the tray from the bed in a few steps at any hour, including the middle of the night.
Distance From Food, Water, and Sleep
Cats keep toileting separate from eating by instinct, and kittens apply the rule from their earliest tray visits. Place the tray at the opposite end of the room from bowls and bed, with as much floor between them as the space gives you. If the room is small, even a screen, a piece of furniture, or a turned corner helps create the sense of separate zones. This separation also protects appetite: a kitten fed beside a used tray may eat less eagerly, and a sleeping area that smells of the tray is one a kitten may abandon for your laundry basket instead.
Quiet Matters More Than Convenience
Avoid spots beside washing machines, boilers, or doors that bang, because one mid-use fright can attach itself to the tray and produce avoidance that looks like stubbornness. Hallways and landings fail on privacy and traffic: a kitten interrupted by passing feet, a dog's nose, or children playing will often finish elsewhere and remember the tray as unsafe. Under-stairs cupboards seem cosy but trap smells and are easily forgotten during cleaning rounds. A spare-room or bedroom corner with the door managed for access usually beats every cleverer option.
Access Rules That Keep the Spot Working
The chosen spot only works if it is reachable at all times, so the door to that room must never be fully closed against the kitten, and everyone in the house needs to know the rule before the first weekend. If other pets live with you, make sure a resident cat or dog cannot ambush or guard the route to the tray, and consider a baby gate a kitten can slip through but a dog cannot. Keep the path clear at night, when first-week accidents tend to happen, and put a washable mat under the tray rather than moving the tray itself when litter tracking becomes annoying.
Moving House Rules Later, Slowly
Once your kitten is confident and the whole home is open, a tray can be relocated gradually, a short distance each day, or supplemented by a second tray in the new preferred place while the original stays put until both are used. Sudden moves to please human tidiness are the classic cause of a relapse in an otherwise trained kitten. Tell everyone the plan before it starts, pin the tray's current location in the notes you share through KinsLe Family Sharing, and your kitten's profile keeps the whole household aligned on the one detail that quietly decides whether training holds.