How many litter boxes do I need?

One per cat plus one spare, placed in separate locations. Two boxes side by side count as one to a cat.

Is a covered box ever a good idea?

Only for a confident single cat who uses it happily. If there is any house-soiling problem, take the lid off first — it is the cheapest fix there is.

My cat has started going outside the box.

Treat it as a health problem until proven otherwise and speak to a veterinarian, especially with a male cat who is straining. Once medical causes are ruled out, look at box size, cleanliness and location.

Litter boxes

How to Choose a Litter Box for an Indoor Cat (Buying Guide)

Litter box trouble is the most common reason cats end up rehomed, and the box itself is often the cause. Cats want a big, clean, open tray in a quiet spot — and one more tray than there are cats in the home.

An extra-large open-top stainless steel cat litter box with high sides, a plastic outer enclosure and a scoop

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What to look for

Length, not footprint marketing: The tray should be at least one and a half times your cat's body length from nose to base of tail. Most boxes sold as 'large' are still too small for an adult cat.
Low entry, high back: An entry side around 10–15 cm suits kittens and older cats with stiff joints, while taller back and side walls contain enthusiastic diggers.
Smooth, non-porous plastic: Scratched or porous trays hold odour no matter how often you scoop. Plan to replace a plastic tray every year or two.
Open rather than hooded: Covers trap smell inside for the cat and give no escape route if another cat blocks the doorway. If you want a cover for splashing, choose one with a removable lid.

What to avoid

Automatic boxes for nervous cats — the motor noise puts many off.
Boxes with a narrow doorway or a swinging flap.
Placing the box beside the food bowls, a washing machine or in a dead-end corner.

Getting it right at home

One box per cat plus one, in different rooms.
Scoop at least twice a day; full change and wash weekly.
Unscented clumping litter at a depth of about 5 cm suits most cats.
Wash with hot water and mild soap, never ammonia-based cleaners.

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Frequently asked questions

How many litter boxes do I need?: One per cat plus one spare, placed in separate locations. Two boxes side by side count as one to a cat.
Is a covered box ever a good idea?: Only for a confident single cat who uses it happily. If there is any house-soiling problem, take the lid off first — it is the cheapest fix there is.
My cat has started going outside the box.: Treat it as a health problem until proven otherwise and speak to a veterinarian, especially with a male cat who is straining. Once medical causes are ruled out, look at box size, cleanliness and location.

Other buying guides

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