Wash your litter box weekly with hot water and mild dish soap, then dry it completely before refilling

A clean litter box keeps your cat healthier and your home fresher. The basic process takes about 10 minutes: empty the box, scrub the inside with soapy water, rinse thoroughly, dry it, and refill with fresh litter. Most cat owners find weekly washing works well, though boxes with multiple cats or odor problems may need twice-weekly cleaning.

You do not need special chemicals or expensive cleaners. Hot tap water and regular dish soap remove urine buildup and bacteria that cause smell. Avoid bleach and ammonia-based cleaners—ammonia smells like cat urine and can confuse your cat, and bleach mixed with urine creates toxic fumes.

Key Takeaways

  • Empty all litter and dispose of it in a sealed bag before washing, since wet litter is harder to remove and traps odors.
  • Scrub the inside walls and bottom with a brush or sponge and hot soapy water, paying extra attention to corners where urine pools.
  • Rinse the box twice with clean hot water to remove all soap residue, which can irritate your cat's paws.
  • Dry the box completely with a towel or let it air-dry before adding fresh litter, since damp litter clumps poorly and smells worse.
  • Wash your hands after handling the litter box, and consider wearing disposable gloves to avoid contact with bacteria.

Empty and dispose of used litter safely

Scoop out all the litter into a sturdy garbage bag or litter disposal bag. Do not pour it down the toilet—cat litter clumps in water and will clog your pipes, even if the package says "flushable." Tie the bag closed to contain odor and bacteria, then place it in your outdoor trash bin.

If you use a litter box liner, pull it out with the litter inside and tie it closed. Liners make cleanup faster, but some cats dislike the plastic texture under their paws. If your cat kicks litter out of the box, skip the liner and wash the bare box instead.

Scrub the box with hot water and dish soap

Fill a bathtub, large sink, or bucket with 2 to 3 inches of hot tap water. Add one tablespoon of mild dish soap—Dawn, Seventh Generation, or any unscented brand works. Place the empty litter box in the water and let it soak for 2 to 3 minutes to loosen dried urine and litter dust.

Use a stiff brush, old toothbrush, or non-scratch sponge to scrub the inside bottom and all four walls. Pay special attention to the corners and seams where urine pools and hardens. Scrub in circular motions and do not be afraid to use pressure—the plastic is durable. If you see stubborn yellow or brown stains, let the box soak another 2 minutes and scrub again.

For plastic boxes with deep scratches, bacteria can hide in the cracks. If your box is more than two years old and smells even after washing, replacing it may be cheaper than fighting odor. Stainless steel boxes last longer and are easier to sanitize, though they cost more upfront.

Rinse thoroughly to remove all soap

Drain the soapy water and rinse the box under running hot water, turning it to reach all surfaces. Soap residue irritates cat paws and can discourage your cat from using the box. Rinse twice—the first rinse removes most soap, and the second catches what the first missed.

Check the corners and seams again by running your finger along them. If you feel slickness or smell soap, rinse once more. The box should feel smooth and smell only like clean plastic, not like dish soap.

Dry the box completely before refilling

Wet litter clumps poorly, traps moisture, and smells worse than dry litter. Dry the box with a clean towel, wiping the inside bottom and walls. Pay attention to corners where water pools. If you are in a hurry, stand the box upright in sunlight for 5 to 10 minutes—the heat speeds drying and kills remaining bacteria.

You can also let the box air-dry while you prepare fresh litter. Place it upside down or tilted at an angle so water drains out. Do not refill until the box is completely dry to the touch.

Refill with fresh litter and return to its spot

Pour fresh litter into the dry box to a depth of 2 to 3 inches. Most cats prefer this depth—too shallow and they cannot bury waste, too deep and they waste litter by kicking it out. Return the box to its original location so your cat knows where to find it.

If you moved the box during cleaning, place it back in the same spot. Cats navigate by memory and smell, and moving the box even a few feet can confuse them. If your cat does not use the box for a few hours after cleaning, check that it is in the right place and that the litter depth feels normal to your cat's paws.

Prevent odor buildup between washes

Scoop clumps daily to reduce odor and bacteria growth. A quick daily scoop takes 2 to 3 minutes and makes your weekly wash much easier. Remove wet clumps and solid waste, leaving dry litter behind. Add a small amount of fresh litter to replace what you removed.

If odor returns before your next scheduled wash, scoop more frequently or wash the box every five days instead of seven. Multiple cats, a single cat with digestive issues, or a box in a warm room may need more frequent cleaning. Keep the box in a well-ventilated area away from your cat's food and water bowls.

Frequently Asked Questions

Can I use bleach to disinfect the litter box?

No. Bleach mixed with urine creates toxic chlorine gas, which harms both you and your cat. Hot soapy water is safe and effective. If you want extra disinfection, rinse the box with a 1:10 white vinegar and water solution after washing, then rinse again with clean water.

How often should I wash the litter box?

Once a week is standard for one cat. Two cats may need twice-weekly washing. Scoop daily regardless of how often you wash. If the box smells between washes or your cat stops using it, wash more often—odor buildup is the most common reason cats avoid the box.

What if my cat will not use the box after I wash it?

Your cat may dislike the smell of soap or the feel of a wet box. Make sure the box is completely dry before refilling. Rinse twice to remove all soap residue. If the problem continues, try a different mild soap or wash with hot water only, no soap, for a few weeks.

Should I wear gloves when washing the litter box?

Yes, if you prefer. Cat urine and feces contain bacteria that can cause infection if they enter a cut or if you touch your face. Disposable latex or nitrile gloves take the risk out of handling. Wash your hands with soap and warm water for at least 20 seconds after cleaning, gloves or not.

Can I wash the litter box in my kitchen sink?

It is not recommended. Use a bathtub, outdoor hose, or a dedicated bucket instead. Even though you will rinse and sanitize the sink afterward, bacteria from cat waste can linger and contaminate food preparation surfaces. If you must use your kitchen sink, wash it with hot soapy water and then disinfect with a bleach solution after the litter box is clean.