Put each box in a separate room or area, away from food and water

The rule for multiple cats is straightforward: you need one box per cat, plus one extra. For two cats, that means three boxes total. But having three boxes only works if they are not all in the same spot. Cats will not share a litter box the way they might share a water bowl, and a cat cornered by another cat at the only box will either hold it or go elsewhere in your home.

Each box should be in its own room or distinct area—not clustered together in a laundry room corner. A cat needs to feel it can reach the box without running into the other cat on the way. Put one box in a bathroom, one in a bedroom or den, and one in a basement or utility space if you have it. If you live in a small apartment, use different corners of different rooms, or put one box in a closet with the door propped open.

Keep all boxes away from food and water bowls. Cats are naturally clean animals and will not use a toilet near their eating area if they can help it. A box placed next to the food dish often goes unused, which defeats the purpose of having it.

Key Takeaways

  • Place one litter box in a separate room or area for each cat, plus one extra box, so two cats need three boxes total.
  • Spread boxes across different rooms or distant corners so neither cat feels trapped or blocked from reaching one.
  • Keep every box at least a few feet away from food and water bowls, since cats avoid toileting near where they eat.
  • A box in a closet with the door propped open, or under a table in a low-traffic corner, works well in small spaces.
  • If one cat is older or slower, place a box on the same floor where that cat spends most of its time.

Account for your cats' ages and mobility

If one cat is older, arthritic, or slower-moving, place a box on the floor where it spends the most time. An older cat that sleeps upstairs should not have to run downstairs to the only litter box. If you have a kitten and an adult cat, the kitten may not yet know where a box tucked in a far corner is, so keep one box in a central, straightforward-to-find location until the kitten is a few months old.

Stairs are a barrier. If your cats spend time on different floors, put a box on each floor. A cat will not climb stairs to use the toilet if it can avoid it, and a cat that cannot climb stairs easily should never have to.

Choose locations that give cats privacy and escape routes

Cats prefer to use the litter box in a quiet, low-traffic area where they will not be startled or cornered. A box in the middle of a hallway or next to a busy doorway creates stress. A box in a bathroom corner, a spare bedroom closet, or a basement shelf is better because the cat can see who is coming and has a way out.

Avoid placing a box directly in front of a door or window where the cat feels exposed. If you must put a box in a visible area, use a litter box enclosure or privacy screen to give the cat a sense of shelter. Some cats will refuse to use an open box in a high-traffic room, even if it is the only one available.

Avoid heat, humidity, and strong smells

Do not put a litter box next to a furnace, water heater, or radiator. Heat dries out litter and makes odor worse, and it is uncomfortable for the cat. Basements and utility rooms are good choices, but not if they are right next to the heating system.

Avoid damp areas like under a sink or in a room with high humidity. Wet litter clumps poorly, smells worse, and can grow mold. A box in a bathroom is fine as long as it is not directly under a vent or next to a shower.

Keep boxes away from strong-smelling items like cleaning supplies, paint, or air fresheners. A cat may avoid a box that smells like chemicals, and the smell of the box itself will be masked, making it harder for the cat to find it by scent.

Test placement and be ready to move boxes

After you place the boxes, watch where each cat goes. If one cat is using all three boxes and the other cat is going behind the couch, the second cat does not feel safe at the boxes you chose. Move one box closer to where that cat is eliminating, or move it to a quieter area. Cats will tell you through their behavior whether a location works.

Some cats are territorial and will guard a box, preventing the other cat from using it. If you see one cat blocking the doorway to a box or waiting outside it, you need to move that box farther away or add a second entrance (some boxes have two openings, or you can cut a hole in an enclosure). The goal is for each cat to feel it has its own box.

Manage odor without moving boxes constantly

Once you have found locations that work, resist the urge to move boxes around. Cats navigate by scent and habit. If you move a box to a new room every month, the cats may not find it, and you will end up with accidents elsewhere. Scoop boxes daily and change litter weekly to control odor instead of relocating the boxes.

If odor is a real problem in a particular room, the issue is usually that the box is not being scooped often enough, or the litter type is not working well. Before you move the box, try scooping twice a day or switching to a clumping litter that controls smell better. A box in the right location that is kept clean will not smell worse than a box in a "better" room that is neglected.

Frequently Asked Questions

Can I keep both litter boxes in the same bathroom?

You can put two boxes in one bathroom if they are on opposite sides of the room, but it is not ideal. A cat may still feel trapped if the other cat is between it and the exit. If you have a third box, put it in a different room entirely. If the bathroom is your only option, space the boxes as far apart as possible and make sure both have clear escape routes.

What if my cats fight over the litter box?

Fighting over the box usually means one cat is blocking the other from using it. Move one box to a room the blocking cat does not frequent, or add a box with a second entrance so the other cat can escape if cornered. You may also need a fourth box if the territorial behavior is severe.

Should I put litter boxes in my bedroom?

A bedroom is not ideal because litter dust and odor will affect your sleep, but it can work if the box is in a corner far from the bed and you scoop twice daily. A closet with the door propped open is better than the open bedroom floor. If possible, use a bathroom, basement, or spare room instead.

How far apart should the boxes be?

Ideally, each box should be in a different room or at least 6 to 8 feet apart in the same large room. The farther apart they are, the less likely one cat will guard them or prevent the other from using one. In a small apartment, different corners of different rooms is the best you can do.

Can I put a litter box in a closet?

Yes, a closet works well if the door is propped open or you cut a cat-sized hole in it. Closets are quiet, private, and keep litter dust contained. Make sure the closet is not so cramped that the cat feels trapped, and may support there is good air circulation so moisture does not build up.