The daily scoop is the part your cat actually judges
Your cat decides whether the tray is clean by smell and by what her paws feel, not by your weekly schedule. That is why scooping matters more than any other step. Remove solids and urine clumps at least once every day, and twice a day if the household can manage it, especially for a single tray, an indoor cat who uses it for every toilet trip, or a cat who has previously refused a soiled tray. A quick scoop takes under a minute and prevents the build-up that makes cats perch on the edge, dig frantically, or choose the floor beside the tray instead. After scooping, top the litter back up to a consistent depth so digging feels the same each time. Keep the scoop and waste bags stored right beside the tray, because a routine that requires fetching supplies from another room is the routine that gets skipped on rushed mornings.
The weekly wash and full litter change
How often you empty the tray completely depends on the litter you use. With a clumping litter, a full empty, wash, and refill roughly once a week suits most single-cat trays, sooner if odour lingers after scooping or residue has built up on the base. Non-clumping litter saturates throughout, so it usually needs a complete change more frequently, guided by smell when the tray is freshly scooped. Wash the empty tray with warm water and a mild, unscented cleaner, rinse it well, and dry it before refilling, since strong disinfectant scents can deter the very cat you are cleaning for. Inspect the plastic while it is empty. Deeply scratched trays harbour odour in the grooves no matter how well you wash them, and replacing a tired tray is sometimes the change that restores reliable use. Have the spare tray available during washing so your cat is never left without an option.
Cleaning habits that protect people as well as cats
Always wash your hands thoroughly after handling litter, and keep tray cleaning separate from food preparation areas and utensils. Pregnant people and anyone with a weakened immune system should hand the litter duties to someone else where possible, because cat faeces can carry parasites that matter more for them; your midwife, doctor, or veterinarian can explain the precautions for your household. Bag waste promptly and put it in the outside bin rather than leaving it beside the tray, which defeats the point of scooping for a scent-driven animal. If more than one cat shares the tray, clean more often than the minimum, not less, because use accumulates faster and a subordinate cat will be the first to give up on a tray that smells of the other cat's waste.
When cleaning more often still does not solve the problem
If your cat avoids a tray you are scooping twice a day, cleanliness alone is probably not the issue. Look at location, litter texture, tray size, competition from another cat, and health, in that order, and contact your veterinarian if the change in habits is sudden or comes with straining, blood, or altered appetite or thirst. Keep a brief note of how often you find the tray used and any accidents elsewhere, as that record helps a vet distinguish a hygiene problem from a medical one. The aim is a rhythm so predictable your cat never has to make a decision about the tray at all. KinsLe Care Teams supports that rhythm by turning the scoop, top-up, and wash into assigned duties that a partner or family member can tick off with a timestamp when you are out.