Litter Box Setup: How Many Boxes, Which Litter and Where to Put Them

Most litter box problems are setup problems. A box that is too small, in a noisy spot, or filled with a litter the cat dislikes can lead to accidents elsewhere in the home.

These guidelines reflect common advice from feline veterinary organizations. Every cat has preferences, so use them as a starting point and adjust.

How many litter boxes do you need?

The usual rule is one box per cat, plus one. Two cats means three boxes. In homes with more than one floor, put at least one box on each level.

Boxes placed side by side count as one large box to a cat, so spread them out. This matters most in multi-cat homes, where one cat may guard a route or a box.

Choosing the right box

Bigger is better. A box roughly one and a half times your cat's length from nose to base of tail lets them turn around and dig comfortably. Many commercial boxes are on the small side; large storage tubs with a low entry cut into one side are a popular alternative.

Covered boxes keep litter in, but they also trap odor inside and some cats dislike them. Kittens, older cats and cats with arthritis need a low entry they can step over easily.

Which litter is best?

Most cats prefer a soft, sand-like texture without perfume. Common options:

• Clumping clay: popular, easy to scoop, can be dusty
• Silica crystals: absorbent and low-odor, but some cats dislike the feel
• Plant-based (corn, wheat, wood, tofu): lighter and often flushable or compostable — check local rules before flushing
• Paper pellets: low-dust, often recommended after surgery

Tip: If you change litter, do it gradually: mix a little of the new litter into the old over a week or two.

Where to put the litter box

Choose quiet, low-traffic spots where the cat cannot be cornered and has a clear view of anyone approaching. Avoid placing boxes next to washing machines, boilers or other noisy appliances.

Keep litter boxes well away from food and water bowls. Cats naturally avoid eliminating near where they eat.

Cleaning routine

Scoop solids and clumps at least once a day — twice is better in multi-cat homes. Top up the litter to keep the depth consistent.

Empty the box completely, wash it with warm water and unscented soap, dry it and refill with fresh litter regularly — roughly every one to two weeks for clumping litter, more often for non-clumping types. Avoid strong disinfectants and ammonia-based cleaners, whose smell can resemble urine.

Tip: Pregnant people should avoid cleaning litter boxes where possible, or wear gloves and wash hands afterwards, because of the risk of toxoplasmosis.

Litter box warning signs: call the vet

Changes in litter habits are often the first sign of illness. Contact a vet if your cat urinates more or less than usual, has blood in the urine, cries in the box, or starts going outside the box.

A cat — especially a male cat — that strains in the litter box and produces little or no urine needs emergency veterinary care. A urinary blockage can become life-threatening within hours.

General information only. Check product labels and manufacturer instructions before you start.