Most cats will use a new litter box within a few days if you place it where the old one was and fill it with litter they recognize

Cats are creatures of habit, and a new litter box feels foreign to them—not because of the box itself, but because of location and smell. The fastest way to make the switch is to put the new box in the exact spot where the old one sat, fill it with litter from the old box mixed with fresh litter of the same type, and leave the old box there for a few days. Most cats will start using it when ready. If your cat has been using the same litter brand for years, switching brands at the same time you introduce a new box creates two changes at once, which is why cats sometimes reject it.

The transition works best when you control the timing. Do it when your cat is calm and the house is quiet—not during a move, a new pet arrival, or another stressful event. If your cat is older or anxious, give yourself a week rather than a few days.

Key Takeaways

  • Place the new litter box in the exact location of the old one, not in a different room or corner.
  • Fill the new box with a mix of litter from the old box and fresh litter of the same brand to preserve familiar scent.
  • Leave the old box in place for three to five days so your cat can transition at their own pace.
  • If your cat avoids the new box, check that it is the same size and type—some cats reject covered boxes or boxes that are too small.
  • Never punish a cat for missing the box; instead, place them gently in it after they eat or wake up.

Keep the litter type and brand the same when you switch boxes

Cats have strong preferences about litter texture and smell. If you have been using clay clumping litter, stick with clay clumping. If you switch to crystal, paper, or pine litter at the same time you introduce a new box, your cat may refuse both. Test any new litter in the old box first—add a small amount to the existing litter and watch whether your cat uses it without hesitation over several days.

The scent matters as much as the texture. Used litter carries your cat's own scent, which signals to them that the box is a safe place to go. When you set up the new box, scoop out some used litter from the old box and mix it into the fresh litter. This takes less than a minute and makes a real difference in how quickly your cat accepts the new box.

Place the new box where the old one stood, not somewhere new

Location is the single biggest factor in whether a cat will use a new box. Cats learn the path to their litter box the same way they learn where their food bowl is—by repetition and muscle memory. If you move the box to a different room or a different corner of the same room, your cat may not find it, or may continue using the old location out of habit.

Put the new box in the exact spot where the old one was. Once your cat is using it reliably for a week, you can move it slowly to a new location if you need to—shift it a few feet every few days. But during the initial transition, location should not change.

If you have multiple cats, place the new box next to the old one temporarily rather than replacing it. Some cats are territorial about litter boxes, and having two boxes side by side lets each cat choose without conflict.

Leave the old box in place for three to five days

Removing the old box too quickly is the most common reason cats have accidents during a transition. Even if your cat uses the new box on day one, they may still check the old location out of habit. Leaving both boxes in place for three to five days lets your cat adjust without confusion.

After five days, if your cat is using the new box consistently and the old box is clean, you can remove the old one. If the old box still has urine or stool in it, your cat is still using it—wait another few days before removing it. Some cats take longer, especially if they are older or have lived in the same home for many years.

Check the size and type of the new box against what your cat prefers

A new box that is too small, too tall, or covered when your cat is used to an open box will be rejected, no matter where you place it. Cats need to fit comfortably inside with room to turn around and dig. A good rule is that the box should be at least one and a half times the length of your cat's body.

If your cat has always used an open box, do not switch to a covered one without testing it first. Some cats feel trapped in covered boxes. If you want to use a covered box for odor control, introduce it gradually—place it next to the open box for a week, then swap them. Watch whether your cat uses it or goes back to the old location.

Older cats or cats with arthritis may struggle with boxes that have high sides or narrow entry points. If your cat is limping or moving slowly, choose a box with lower sides or a wide opening so they can enter without strain.

Gently place your cat in the new box after meals and naps

If your cat is avoiding the new box after a few days, place them in it gently at times when they are most likely to need it—right after they eat, after they wake up from a nap, or after playtime. Do not force them or hold them there. straightforward set them down gently, let them sniff, and leave. Many cats will use the box within minutes if they are placed there at the right moment.

Never punish a cat for missing the box or having an accident. Punishment teaches fear, not habits. If you find an accident outside the box, clean it thoroughly with an enzymatic cleaner (one made for pet urine) so the scent does not draw your cat back to that spot.

Watch for medical issues if your cat refuses the new box for more than a week

If your cat has been using the old box without problems and suddenly refuses the new one after a week of trying, the issue may not be the box itself. Urinary tract infections, digestive problems, and other health issues can make cats avoid their litter box or change their bathroom habits. If your cat is straining, going more often than usual, or having accidents outside the box, contact your veterinarian.

Some cats also develop anxiety around litter boxes if they have had a bad experience—such as being startled while using it, or having the box moved suddenly. If your cat seems fearful of the new box, place it in a quieter location away from appliances, other pets, or high-traffic areas.

Frequently Asked Questions

How long does it usually take a cat to use a new litter box?

Most cats use a new box within the first day or two if it is in the right location and filled with familiar litter. Some cats take three to five days, especially if they are older or anxious. If your cat has not used it after a week, check the location, litter type, and box size.

Can I use a different litter brand when I get a new box?

It is better not to change both at once. Introduce the new litter in the old box first and watch whether your cat uses it for several days. Once your cat accepts the new litter, then switch to the new box. This way you are only changing one thing at a time.

What if I have two cats and only one will use the new box?

Place a second new box in a different location—cats often prefer to have options, and some cats are territorial. If one cat is blocking the other from the box, separate them temporarily or add a third box so each cat has their own space.

Should I use a covered litter box to control odor?

Covered boxes reduce odor but some cats dislike them. If your cat has always used an open box, introduce a covered one gradually by placing it next to the open box for a week. If your cat refuses it, stick with an open box or try a box with a removable cover so you can test both styles.

My cat had an accident outside the new box. What should I do?

Clean the spot with an enzymatic cleaner made for pet urine—regular cleaners do not remove the scent that draws cats back. Place your cat in the new box after meals and naps. If accidents continue after two weeks, contact your veterinarian to rule out a urinary tract infection or other health issue.