Get

In Your Inbox

Catster is reader-supported. When you buy via links on our site, we may earn an affiliate commission at no cost to you. Learn more.

How Much Cat Litter Per Month Should You Use? Vet-Verified Facts & FAQ

Share

cat sniffing litter in the box

There are many pleasant aspects of cat ownership, but litterbox duty isn’t among them. Still, it is essential to care for your cat, so ensuring that you provide the cleanest litter box possible for your pet is paramount.

While litter box maintenance can seem pretty straightforward, some aspects are a little less clear. For example, how much cat litter per month should you use? The amount you use per month will be determined by several variables, but on average, you can expect to use approximately 20–40 pounds of cat litter per month per cat, depending on how often you fully change the box vs. scoop and top off. In this article, we will look at the variables and help you calculate how much litter you should use each month.

divider 2 cats

How Much Cat Litter Does the Average Cat Go Through in One Month?

Every cat is different, and their litter usage will vary. Some cats may need around 20–25 pounds of litter each month, but cats that use a larger tray or those that prefer a spotless litter box may need as much as 40 pounds per month. Moreover, cats experiencing medical issues that cause them to urinate more or have diarrhea may need an even greater amount.

While these averages can serve as a helpful baseline, they do not account for the variables that can impact how much litter you should use. Below, we will discuss those variables in depth.

Ginger cat in blue litter box
Image Credit: Lightspruch, Shutterstock

divider 2 cats

The 3 Variables to Determine How Much Cat Litter Per Month You Should Use

In addition to the size of your cat, other factors may influence how much kitty litter your cat goes through in a month. These factors are the size of your litter box, the number of cats in your household, and the type of cat litter you use.

1. Type of Cat Litter Used

There are plenty of cat litters on the market, but most can be grouped into one of three categories: biodegradable, clay-based, and silica-based.

When comparing clay-based and silica-based cat litter, clay-based litter needs to be changed more often. You will run through clay-based litter faster than silica-based litter, thus impacting how much is used per month. Biodegradable litter varies by material. Some types, like pine pellets, last longer than clay, while others may require more frequent changes.


2. Size of the Litter Box

It is recommended that you fill your cat’s litter box with around 2–3 inches of cat litter. Depending on the size of your cat’s litter box, reaching the 2–3 inch mark can take a lot of litter or only a little bit.


3. Number of Cats in Your Household

Cats need their own litter box, or they may begin doing their business outside the box. By having multiple cats, you will regularly fill multiple litter boxes.

Therefore, the number of cats you have in your home will determine how much cat litter you use monthly. It’s best to have one litter box per cat plus one extra.

two-cats-looking-at-the-litter-box
Image credit: Zoran Photographer, Shutterstock

divider 2 cats

Determining How Much Cat Litter to Use Per Month

To determine how much cat litter to use each month, consider the averages listed above and the variables you should factor in. This should help you come to a decent estimate.

You can verify if your estimate is accurate by keeping track of how much litter you go through in a month. Diligently clean and replace your cat’s litter regularly so you can accurately calculate how much litter you use in a month.

By the end of the month, you can total up the amount of litter used to have a specific number that suits you rather than a generalized average.

During this time, it is also a good idea to monitor your cat’s litter box behavior for any signs that you are using too much or too little cat litter.

For more personalized advice on how to meet your cat’s litter box needs, reach out to your vet for a detailed consultation.

Signs That You Are Using Too Much Cat Litter

One of the most notable signs you are using too much cat litter is if your cat flings litter outside the box. When you clean out the litter box, do you accidentally step into a mini mountain of litter? That clearly indicates that your cat needs less litter in their box.

If you notice your cat only partially enters the litter box before doing their business, that’s another sign of too much litter in the box.

two-cats-on-litter-box
Image Credit: Guajillo studio, Shutterstock

Signs That You Are Not Using Enough Cat Litter

The most notable sign you are not using enough cat litter is if your cat avoids using the litter box. Cats like to bury the evidence of their waste, so if there is not enough litter to bury their feces or urine, they may avoid the box altogether.

divider 2 cats

How Much Does Cat Litter Cost Per Month?

The average cost of cat litter per month can vary depending on several variables, such as the brand you purchase and how much your cat goes through in a month.

On average, you can expect to pay $20–$40 per month for cat litter when using mid-range clumping clay litter. This estimate can vary depending on the type of litter you use and how often you fully change it. If you scoop the litter box daily and only replace litter as needed, you may use less overall. Regular scooping also helps control odors and keeps the box cleaner between full changes.

divider 3 paws

Final Thoughts

Replacing cat litter is an unpleasant aspect of cat ownership, but it is an important one. On average, you can expect to go through 20–40 pounds of cat litter each month, but that amount can vary depending on your cat’s size, their health, and many other factors.


Featured Image Credit: Duet PandG, Shutterstock

Want content like this delivered to you?

Sign Up For Our Newsletter

News, insights, expert advice, and everything cat

* By submitting, you agree to our Terms & Conditions and Privacy & Cookies Policy.




How useful was this post?

Click on a star to rate (you can leave written feedback after clicking submit)

Help us improve Catster for pet parents!

Your feedback really matters.

What did you like about this post? Also how can we improve it?

Join the conversation

2 Responses

  1. How many times a month should you empty all litter and wash the litter box? Does it need to be washed out every time you change the litter box?

    1. Hello Patsy, you can find the answer to your questions in this post: https://www.catster.com/cat-health-care/how-often-to-clean-a-litter-box/

Leave a Reply

You’re very welcome to leave a comment or question. Please know that all comments must meet our community guidelines, and your email address will NOT be published. Let’s have a positive and constructive conversation.


Catster's Digital Magazine is Back!

Vet-approved health & behavior advice

Real cat stories & community features

Weird Cat Behaviors That Actually Make Perfect Sense

We have been sharing our lives with cats for thousands of years, yet we still find ourselves genuinely stumped by what they get...

The Dream of Talking to Cats Just Got Closer to Becoming a Reality

If you’ve ever wished your cat could simply tell you what they wanted, you’re not alone. From the meow that wakes you before...

Kizzy: The Feline Princess With a Purpose

We were first introduced to Miss Kizzy after she won a licky-treat challenge hosted by Professor Fluffovich, our resident feline research specialist. While...

Chatting With Sally About Mission Meow & Helping Cat Rescue Organizations Collaborate | Chatty Cattys, Episode 24

In this episode of Catster’s podcast, Chatty Cattys, Nicole and Dr. Karyn sit down with Sally Williams, the founder of Mission Meow, for...

More related

Can Cats Get Dogs Sick? Our Vet Explains Illnesses & Prevention Tips

If you have a sick cat, you may wonder if they may be able to spread the same sickness to your unsuspecting dog....

10 Best Christmas Gift Ideas for Cats in 2026 – Reviews & Top Picks

People love their pets. According to Business Wire,1 the global market for pet supplies is projected to reach $41.1 billion by 2025. We...

11 Devon Rex Colors (Common & Unique Varieties)

The inquisitive and friendly Devon Rex is a cat with an unlimited supply of love and loyalty to share with the right people....

21 Fun & Vet-Reviewed Facts About Cats For Kids

Getting a new cat can be a lot of fun for the entire family, but it can be hard to know how you...

Keep reading

Why Is My Cat’s Fur Suddenly Matted? 7 Vet-Reviewed Reasons

Cats are famous for keeping themselves clean and looking neat all the time. In fact, some would say that cats are obsessive groomers. It’s safe to assume that if your cat isn’t sleeping, they’re probably grooming instead. That’s why it’s...

combing fur of a maine coon cat

5 Cat Marking Behaviors: Vet-Reviewed Facts & Prevention

Cats may be small, but they are territorial little things. It makes a lot of sense if you think about your cat’s wild ancestors. They were only able to survive if they were successful hunters with access to a secure...

cream silver tabby norwegian forest cat marking its territory

How to Safely Surrender a Cat: 4 Responsible Steps & FAQ

Surrendering your cat can be a difficult and emotional experience. It’s important to consider all the potential implications of surrendering your pet before making this decision. This article outlines everything you need to know about how to safely and responsibly...

cat on woman owners lap

Nom Nom Cat Food Review: Recalls, Pros, Cons & Verdict

Disclaimer: Nom Nom has discontinued its fresh cat food recipe and is no longer taking orders. Nom Nom hopes to return to providing fresh food to cats in the future when they have more readily available high-quality ingredients. We have...

Nom Nom Cat Food

Kit & Kaboodle Cat Food Review of 2026: Recalls, Pros & Cons

Review Summary Kit & Kaboodle is one of the most inexpensive cat foods. However, the quality is relatively low, with low-quality filler ingredients taking up most of each formula. It is cheap for a reason. Kit & Kaboodle is a...

Kit & Kaboodle Cat Food Review

Why Does My Cat Look Out the Window All Day? 5 Vet-Verified Reasons & Care Tips

Does your cat love their window seat? Many cats spend most of their days hanging out by a window to see what’s happening. You might not understand the allure, but you have a fluffy predator on your hands, and it’s...

ginger cat looking at the window

Is a Humidifier Safe for My Cat? (Potential Risks & Crucial Safety Tips)

For certain households, using a humidifier is a necessity during the winter months. But maybe you have a new cat or are thinking about purchasing your first humidifier and are not sure if it will be safe with your cat....

Catster_is a humidifier Safe for Cats TEMPLATE_v1_Feb 28 2025

Can Cats Drink Ensure? Vet-Approved Health Facts & Safety Guide

When your cat isn’t feeling well, you want to ensure they stay hydrated. Since a loss of appetite can strike humans and animals alike when they’re sick, your cat needs to get the nutrition they need so they can become...

Can Cats Drink Ensure

Love Cats? So Do We! Join the Catster Community

Stay informed with expert pet care insights delivered straight to your inbox! Discover professional guidance on animal behavior, feeding tips, trusted product picks, and much more.




Sign up for the Catster Email Newsletter

Stay informed with expert pet care insights delivered straight to your inbox! Discover professional guidance on animal behavior, feeding tips, trusted product picks, and much more.