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The tray came free with the kitten. It is small, beige and shallow, and most mornings there is a ring of litter on the floor plus a damp patch just past the rim. The cat is not being awkward. She has simply outgrown the box. Choosing the best litter box for cats comes down to three things: size, side height, and whether your cat will put up with a lid.
Quick version: for most adult cats, a large open box with high sides is the safest first buy. Covered boxes suit homes where the tray sits in plain view and the cat is relaxed about lids. Top-entry boxes cut tracking and keep dogs and toddlers out, but they are a poor match for kittens, seniors and stiff joints. Whatever style you pick, aim for a box about one and a half times your cat’s length.
Got more than one cat? Read how many litter boxes cats really need before buying one fancy tray for everyone.
What to look for in a litter box
Size comes first. Measure your cat from nose to the base of the tail, then look for a box at least one and a half times that length. A cramped cat perches on the edge, aims badly, and you end up mopping the floor.
Side height is next. Cats who stand to pee, or who dig like they are hunting for buried treasure, need walls of around 15 cm or more. A lower cut-out on one side keeps it easy to step in.
Then the dull bits that matter after week two. Smooth, unscratched plastic scrubs clean and holds less odour, so replace a box once the base is badly scored. And check it fits the spot you have in mind, because a big box squeezed behind the loo is worse than a medium one with space around it.
Large open boxes with high sides
This is the style we suggest most often, and the one we would start with for a new adult cat. Open boxes let smell drift away rather than trapping it around the cat’s nose. Nervous cats can also watch who is coming, which matters in multi-cat homes, where one cat lurking by a hooded exit can put another off the box for good.
The downside: you see everything, and so do your guests.
A plain jumbo pan like the Petmate Giant Litter Pan on Amazon is a no-frills place to start. A large storage tub with a doorway cut into one end is an old trick that still works for big cats and keen diggers.
Best for: first-time owners, large cats, multi-cat homes, and any cat who has ever peed over the edge.
Covered and hooded litter boxes
Hoods hide the view and hold in more of the scattered litter. To people they look tidier. Cats are split.
Opinion: covered boxes are fine for confident cats and a gamble for timid ones. The lid keeps smell in, which is lovely for your lounge and less lovely for a nose far sharper than yours. If you go covered, scoop daily, because a dirty box is easy to miss when you cannot see inside.
Take the flap door off for the first week or two. Lots of cats accept a hood but object to shoving through a swinging door. The Catit Jumbo Hooded Cat Pan on Amazon is a roomy hooded design worth comparing against your tape measure.
Skip if: your cat bolts at sudden noises, or you have two cats who ambush each other. A box with a single exit can feel like a trap.
Top-entry boxes and litter tracking
Top-entry boxes have a hole in the lid. The cat hops up, drops in, does their business, then climbs out across a grooved lid that knocks litter off their paws on the way. For a serious tracker, a dog that raids the box, or a toddler who thinks litter is sand, they solve real problems.
They are not for every cat. Kittens, older cats and anyone with sore joints can struggle with the jump. If your cat stands on the lid, stares into the hole, then wanders off to the bathmat, go back to an open box.
If you want to try the style, an IRIS top-entry litter box on Amazon is one of the familiar designs.
What about self-cleaning litter boxes?
Automatic boxes rake or rotate waste into a sealed drawer after the cat leaves. They can help if you work long days. They are also pricey, sometimes loud, and can spook a sensitive cat for weeks.
Our view is simple: buy a good manual box first and learn your cat’s habits. Daily scooping is also a free health check. If you still want an automatic box later, set it beside the old one, switched off, for a few days. The same slow, side-by-side approach we use for an automatic cat feeder works here too.
Setting up a new box so your cat actually uses it
Put it somewhere quiet but not in a dead end, away from food bowls and the washing machine. Fill it with about 5 cm of unscented litter your cat already accepts. Change one thing at a time, never box and litter together. If you are still choosing a litter, our guide to cat litter for multi-cat homes covers clumping clay, crystals and plant options.
Leave the old box out alongside the new one for a few days. Once the cat has used the new one a handful of times, retire the old tray. For a cat still on the way home, have the box ready before they arrive; it sits near the top of our new cat owner checklist for good reason.
Call the vet the same day if your cat keeps visiting the box and producing little or nothing, cries while going, or you spot blood. Male cats in particular can develop urinary blockages, which are an emergency. Going outside the box can also be pain talking rather than a dislike of the tray.
Short FAQ
How often should I replace a litter box? When the plastic is scratched enough that clumps cling or smell lingers after a proper wash. For many homes that is roughly once a year.
Can two cats share one big box? Sometimes, but it is the setup most likely to end in accidents. The spare box rule exists for a reason.
Back to that beige starter tray. Swap it for something big and open, keep it scooped, and the damp patch past the rim often stops showing up. It is one of the cheapest fixes in cat ownership.
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