How to Choose the Right Litter Box: Size, Depth, and Hood Truths

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How to Choose the Right Litter Box: Size, Depth, and Hood Truths

Buy the biggest open box that fits your space , at least one and a half times your cat's body length. Fill it with about 5 cm of litter, keep entry low for easy access, and skip the hood unless you have a specific reason. Most litter box problems come from a box that is too small, too shallow, or too enclosed for the cat's comfort.

• A box should be at least 1.5 times your cat's body length from nose to tail base.
• About 5 cm of litter depth suits most cats , enough to dig, not so much it spills.
• Low entry (under about 10 cm) matters for kittens and older or arthritic cats.
• Covered boxes trap odour and dust inside, which many cats dislike more than owners do.
• Storage tubs and under-bed boxes often make better litter trays than purpose-sold ones.

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Size: bigger almost always wins

Cats want room to turn around, dig and position themselves without touching the sides. A box that is too small is one of the most common reasons a cat starts going just outside it. Measure your cat from nose to the base of the tail and choose a box at least one and a half times that length. Many owners find a large plastic storage tub works better and costs less than a purpose-built tray.

Aim for a box at least one and a half times your cat's body length , most shop-bought boxes are too small.

Depth of litter: aim for about 5 cm

Cats need enough litter to dig a small hole and cover their waste, which is instinctive. Around 5 cm is a good target for most clumping litters. Too shallow and the cat scrapes the plastic and may stop covering; too deep and it spills over the sides and feels unstable underfoot. Keep the depth even and top up as scooping removes litter over the week.

Around 5 cm of litter lets a cat dig and cover without scattering it everywhere.

Entry height and accessibility

High sides help contain litter and scatter, but a tall entry is a barrier for kittens, seniors and cats with joint pain. If your cat is young, old or stiff, choose a box with at least one low side , under about 10 cm , or cut a lower entry into a storage tub. A cat that hesitates, hovers or half-climbs in may be struggling with the entry, not the litter.

The hood question: open vs covered

Owners often prefer covered boxes for looks and odour control, but many cats do not. Hoods trap ammonia smell and dust inside, reduce visibility (cats like to see approaching threats while toileting), and can feel cramped for larger cats. If you must use a hood , for a very messy digger, say , pick the largest one available and scoop it even more often. When in doubt, start open.

Placement basics

Even the perfect box fails in the wrong spot. Put it in a quiet, low-traffic area away from food and water, with an easy escape route so the cat is never cornered. In a small flat, avoid tucking it beside a noisy washing machine or in a cupboard the cat can be shut out of. Accessibility and calm matter as much as the box itself.

Living context by region

This guide is written for multi-region English readers (US/UK/AU/NZ/CA/EU and more). Where climate, products, or vet access differ, prefer local veterinary advice and local product labels. Use metric first; keep °F/lb in mind for North American homes.

When to call your vet

• Signs are getting worse over hours, not better

• Pain, persistent vomiting/diarrhea, or neurological signs

• You needed force or guesswork to keep going at home

Common mistakes

• Waiting because the animal 'still looks okay' while prey species hide pain

• Changing five variables at once so you cannot tell what helped

• Copying drug doses from social media

• Skipping species-appropriate husbandry while buying more gadgets

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