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

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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.

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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

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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

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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.

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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.

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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

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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/

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