Minute one and two: the litter tray does the heavy lifting
In a small flat, almost all cat odor comes from one source, so the routine starts and nearly ends at the litter tray. Scoop out solids and clumps once a day, every day, and the tray never accumulates the ammonia smell that owners then chase with sprays and scented products. Shake the scoop clean, level the litter, and top it back up to the depth your cat digs happily at, since a tray allowed to run shallow is a tray a cat may start avoiding. Tie the scoopings into the bag that leaves the flat with your household rubbish rather than parking them in an open kitchen bin, where they quietly undo the whole exercise. Once a week the tray needs a fuller empty and wash, but that is a separate weekly job; the daily two minutes are what keep the air sweet between washes.
Minute three: bowls, water, and the feeding corner
Wash the food bowl daily in hot soapy water, because the thin film that builds on an unwashed bowl is the second most common source of that stale cat smell in a small home, and empty, rinse, and refill the water bowl at the same time. Wipe the mat or patch of floor under the bowls with a damp cloth; scattered crumbs and the odd splash of wet food go sour fast in a warm flat and attract flies in summer. If your cat eats wet food, lift and bin any leftovers rather than leaving them down between meals, since room-temperature wet food is both the strongest smell and the least appealing version of dinner by the cat's own standards. This single minute, done daily, removes the background odor most visitors would otherwise notice at the door.
Minute four: the litter-tracking trail
Litter travels, especially in a flat where the tray may sit in a bathroom or hallway corner near living space. Spend a minute with a handheld vacuum, a small brush and pan, or even a damp hand run over hard floors to collect the scattered grains along the cat's route from tray to favorite chair. A washable mat under and in front of the tray catches much of it at source and can be shaken outside or over the bin in seconds. This step is about feel as much as smell: bare feet on scattered litter is the small daily irritation that makes a flat feel unkempt even when it is clean, and sixty seconds removes it entirely.
Minute five: air, surfaces, and a quick cat check
Finish by opening a window for a few minutes while you wipe the one or two surfaces the cat uses most, such as the windowsill or the arm of the sofa, with a damp cloth to lift the fine layer of hair and dander. Shake out a washable throw if the cat sleeps on the bed, and glance at the cat herself: bright eyes, a clean rear end, and litter-free paws mean the system is working. If odor persists despite this circuit running daily, look for a cause rather than a stronger fragrance: an overdue full tray wash, a hidden accident behind furniture, or a cat who has stopped using the tray, which is a change worth discussing with your veterinarian. In KinsLe, Care Teams can set this whole five-minute circuit as one daily assigned duty with a completion timestamp, so in a shared flat the tidy happens every day instead of whenever someone finally notices it needs doing.