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How Many Litter Boxes Do I Need?

NYP TeleVet Team
September 14, 2026
A beautiful gray british cat is defecate into a large gray

A good litter box setup is one of the most important things you can do for your cat’s comfort and health. Many litter box problems, like peeing or pooping outside the box, start with a setup that doesn’t suit the cat. So how many litter boxes do you need, and what makes a good one? Here’s a simple guide.

How many litter boxes per cat?

The general rule is one litter box per cat, plus one extra. So:

Even single-cat homes benefit from two boxes. Some cats like to pee in one box and poop in another.

Where to put litter boxes

Location matters as much as the number of boxes:

A large gray triangular plastic enclosed litter box for a cat

Choosing the right litter box

Size

Bigger is usually better. A good guide is a box about 1.5 times the length of your cat, from nose to the base of the tail. Many store-bought boxes are too small for adult cats. Large storage bins can work well.

Covered vs. uncovered

Many cats prefer uncovered boxes, which let them see their surroundings and don’t trap odors. Some cats are fine with covered boxes. If you use one, keep it extra clean.

Height

Kittens, senior cats and cats with arthritis need a low entry so they can step in easily.

Choosing the right litter

Curious domestic cat hiding inside a wardrobe

Keeping boxes clean

Signs your cat doesn’t like their setup

These can also be signs of a health problem. Our articles on cat peeing outside the litter box and my cat hasn’t pooped in 2 days explain when to call a vet.

When it’s an emergency

A cat that’s straining in the litter box with little or no urine may have a urinary blockage. This is an emergency, especially in male cats. Our guide to pet emergency signs explains other urgent symptoms.

Frequently asked questions

Can two cats share one litter box?

Some do, but many cats prefer their own. More boxes can prevent stress and accidents.

How often should I change all the litter?

Many pet parents change clumping litter fully every 2 to 4 weeks, along with daily scooping.

Litter box troubles? Ask a vet

Talk to a licensed vet 24/7, even on holidays, by chat, voice call or video call. Your first month is free with code FREEMONTH, then US $9.99/month, at NYPTeleVet.com. One membership covers up to 6 pets, and you can cancel anytime.

Our vets can’t prescribe medication, but they’ll tell you what’s likely needed and when an in-person visit is the next step.

Sources

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