The basic steps for changing litter

Changing litter means removing the old litter from the box, cleaning the box itself, and adding fresh litter. Most cat owners do this once a week, though the timing depends on how many cats you have and the size of your box. A single cat in a standard box usually needs a full change weekly; multiple cats may need it twice a week.

The process takes about ten minutes. Scoop out clumps daily (this extends the life of your litter), then when you change it completely, dispose of all the old litter, wipe down the box, and refill it with fresh litter to a depth of about two to three inches.

Key Takeaways

  • A full litter change means removing all old litter, wiping the box clean, and adding fresh litter to a depth of two to three inches.
  • Daily scooping of clumps keeps the box fresher longer and reduces odor between full changes.
  • Most single-cat households need a full change once a week; multiple cats usually need it twice weekly.
  • Wear gloves, use a scoop with a handle long enough to keep your hands away from the litter, and dispose of used litter in a sealed bag.
  • If your cat stops using the box after you change brands or types of litter, switch back—cats are particular about texture and scent.

What you need before you start

Gather a litter scoop (ideally one with a long handle and a sifting design), a pair of disposable gloves, a trash bag or bin, and your fresh litter. If your box has stuck-on litter or odor buildup, have a damp cloth or paper towels ready to wipe it down. Some owners keep a small brush nearby for scrubbing corners.

Choose a time when your cat is not in the box—early morning or after you've seen them use it and leave works well. If you have multiple cats, change the box when all of them are elsewhere in the house so none feel locked out of their bathroom.

Removing old litter safely

Put on your gloves first. Use the scoop to break up any clumps stuck to the bottom of the box, then scoop them into your trash bag. If you use clumping litter, the sifting scoop will let you shake out the fine dust and leave only the clumps. Shake the scoop over the bag to dislodge all the litter.

Once you've removed the large clumps, pour the remaining litter into the bag. Tie the bag closed before disposing of it—this contains odor and prevents litter from spilling in your trash can. If you use a litter disposal system (a specialized bin designed for used litter), follow the manufacturer's instructions for sealing and disposing of the bag.

Cleaning the box between changes

After you've emptied the litter, wipe the inside of the box with a damp cloth or paper towel. Pay attention to the corners and edges where urine can pool and create odor. If the box has a stuck-on residue or smell that won't come off with water alone, use a mild soap and rinse thoroughly—cats are sensitive to strong chemical smells and may avoid a box that smells like bleach or harsh cleaners.

Let the box air-dry for a minute or two, or wipe it dry with a clean cloth. A damp box dilutes your fresh litter and can make clumping less effective. If your box is cracked, stained, or has permanent odor, this is a good time to replace it with a new one.

Adding fresh litter and refilling

Pour fresh litter into the clean, dry box to a depth of two to three inches. This depth gives your cat enough litter to dig and bury waste while not wasting litter. If you use a litter mat under the box, check it for scattered litter and wipe it clean at the same time.

If you're switching to a new brand or type of litter, mix some of the old litter (if you saved a small amount) with the new litter for the first change. Cats notice texture and scent changes and may avoid a box that suddenly feels or smells different. A gradual transition over two or three changes helps them adjust.

Handling odor and litter tracking

Odor builds up fastest in boxes that are not changed often enough or scooped daily. If your box smells between changes, scoop more frequently—daily scooping can extend a full change to ten days in a single-cat household. Some owners add a thin layer of baking soda under the fresh litter to absorb odor, though this is optional.

Litter tracking (bits of litter scattered outside the box) is normal, but you can reduce it by placing a mat under and in front of the box. Some mats have a grid design that catches litter on your cat's paws as they leave. Sweep or shake out the mat when you change the litter.

When to replace the box itself

A plastic litter box lasts two to three years with regular cleaning. Over time, plastic absorbs odor and urine, and even thorough cleaning won't remove the smell. If your box is cracked, has permanent stains, or smells bad even after cleaning, replace it. Cats sometimes stop using an old box because the odor buildup bothers them, even if you can't smell it.

When you buy a new box, choose one that is at least one and a half times the length of your cat's body—a box that feels cramped discourages use. If you have multiple cats, the rule is one box per cat plus one extra, so a two-cat household ideally has three boxes in different locations.

Frequently Asked Questions

How often should I scoop the litter box?

Scoop clumps out daily, ideally once in the morning and once in the evening. Daily scooping keeps odor down and makes your cat more likely to use the box consistently. It also extends the time between full changes.

Can I use the same litter box for multiple cats?

Yes, but cats prefer having their own box. If you have two or three cats, keep at least two boxes in different rooms so they don't have to wait or feel threatened. Change the litter more frequently with multiple cats—usually twice a week instead of once.

What should I do if my cat stops using the box after I change the litter brand?

Switch back to the old brand. Cats are particular about texture and scent. If you want to change brands, mix the new litter gradually with the old over several changes so your cat adjusts slowly.

Is it safe to use scented litter?

Scented litter appeals to humans but can bother cats. Many cats prefer unscented litter, and strong scents may discourage them from using the box. Stick with unscented unless your cat shows a preference, and rely on scooping and changing to manage odor.

What's the best way to dispose of used litter?

Seal it in a bag and place it in your regular trash. Never flush litter down the toilet, even if the package says it's flushable—it can clog pipes and damage septic systems. If odor is a problem, use a litter disposal system or double-bag the used litter.