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Top 5 Best Flushable Cat Litters

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The idea of flushing cat litter is an appealing one but it’s not a perfect solution. In the best-case-scenario, flushable litter means less garbage you have to lug out to the curb.

But while it’s made with small, biodegradable granules that break down quickly in water, there’s no guarantee against clogs. And for some plumbing systems – especially older ones – even flushable litter can cause damage.

The fact remains that cat litter probably doesn’t belong in your toilet – even so-called “flushable” cat litter.

While we can’t whole-heartedly recommend it, we’ve rounded up some of the available options for comparison. Just remember that flushing litter is not recommended for older plumbing systems or toilets connected to city water.

At a Glance: Our Top Picks for Best Flushable Cat Litters

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Want a quick look at the products reviewed in this article? In the comparison table below, we’ve highlighted some of the most important features of each product. You’ll find more detailed information about each product later in the article.

Overall Best
Picked by 31 people today!

ökocat Original Premium Wood Clumping Cat Litter

  • Lightweight and gentle on cats’ paws
  • Forms clumps for easy scooping
  • Fragrance-free with no synthetic additives
$24.99 At Chewy
Runner Up
Picked by 31 people today!

World’s Best Cat Litter

  • Made from all-natural corn materials
  • Quickly forms easy-to-scoop clumps
  • Lighter than clay cat litter
Best for Multiple Cats
Picked by 25 people today!

sWheat Scoop Multi-Cat Natural Clumping Cat Litter

  • 100% natural, made from wheat
  • Free from synthetic fragrance
  • Granules may track less than some litter
Best for Sensitive Cats
Picked by 21 people today!

Sustainably Yours

  • Made from sustainable resources
  • Forms tight, hard clumps for easy scooping
  • Much lighter than clay litter
Best Compostable
Picked by 18 people today!

Almo Nature Unscented Clumping Plant-Based Grass Litter

  • Made from renewable grass materials
  • Lightweight and gentle on cats’ paws
  • Clumps well for easy scooping

Why Should You Trust Us?

Over the last several years, we’ve written in-depth reviews on over two dozen of the most popular cat litter brands and more than 50 litter products.

Our litter team has spent hundreds of hours testing these products’ clumping ability, odor control, dustiness, tendency to track and scatter, and more. In addition to our own product research and testing, we’ve read thousands of customer reviews and consulted several veterinarians to get their take on the safest and most effective cat litter.

Based on extensive research, hands-on testing, and expert insights, we’ve selected the following five cat litter products as the best flushable options on the market.

Our Veterinary Advisors

The Best Flushable Cat Litter: Our Top 5 Picks

#1 Overall Best: ökocat Original Premium Wood Clumping Cat Litter

Made from wood fibers, this clumping cat litter is a natural alternative to clay that doesn’t require you to sacrifice clumping convenience. It’s very lightweight and has a soft texture that’s gentle on your cat’s paws. The lightweight nature of the litter may, however, contribute to tracking.

Customers report that this litter does a good job of controlling odors, and it forms easy-to-scoop clumps without the use of chemical binders. It’s completely fragrance-free and doesn’t contain any synthetic additives.

Keep in mind that because this is a very lightweight litter, it may not flush away completely on the first try. ökocat does not recommend flushing this litter in low-flow toilets. It also expands on contact with liquid, so be sure to break up clumps before flushing.


  • Lightweight and gentle on cats’ paws
  • Forms clumps for easy scooping
  • Fragrance-free with no synthetic additives


  • Not recommended for low-flow toilets
  • Expensive, over $1.25 per pound

#2 Runner Up: World’s Best Cat Litter

Easily one of the most popular natural cat litter brands, World’s Best cat litter is made from corn. It’s known for its strong clumping ability which makes scooping the litter box that much easier. This litter is also a little lighter than the typical clay cat litter.

World’s Best clumping cat litter comes in both scented and unscented varieties, all of which are marketed as flushable and septic-safe.

Some customer reviews suggest that the litter’s odor control ability is limited and others report that the granules are jagged in texture and may not be appropriate for sensitive paws. Overall, however, this cat litter carries a 4.6 out of 5-star rating on Amazon with over 4,800 reviews.


  • Made from all-natural corn materials
  • Quickly forms easy-to-scoop clumps
  • Lighter than clay cat litter
  • Marketed as both flushable and septic-safe


  • Odor control ability may be limited
  • Granules may be too sharp for sensitive paws

#3 Best for Multiple Cats: sWheat Scoop Multi-Cat Natural Clumping Cat Litter

Formulated for improved odor control in multi-cat households, sWheat Scoop litter is made from wheat. It’s a 100% natural cat litter domestically sourced in the United States and completely free from fragrance. It does contain added starch to improve the clumping ability.

This cat litter is popular among cat owners who suffer from allergies because it doesn’t produce silica dust. The granule size and shape are designed to reduce tracking as well. Some customers report, however, that the litter doesn’t clump quickly which can make scooping a little messier.

sWheat Scoop is marketed as a flushable cat litter and, because it tends not to form clumps as hard as others, it may be easier to flush better than some options. It’s still important to break up the clumps and soak them before flushing.


  • 100% natural, made from wheat
  • Free from synthetic fragrance
  • Granules may track less than some litter


  • Doesn’t clump as quickly as some options

#4 Best for Sensitive Cats: Sustainably Yours

This all-natural cat litter is made from corn and cassava, both of which are renewable resources. They’re also biodegradable, so this cat litter can be flushed after soaking for 15 minutes.

The litter is completely unscented and free from synthetic additives, so it may be a good choice for cats with sensitive noses. The lightweight granules are also gentle on cats’ paws.

Sustainably Yours litter is available in three formulas – two multi-cat formulas and one large-grain formula. The litter forms tight clumps which customers report are easy to scoop. Some customers report, however, that the clumps are very hard and can be difficult to break apart for flushing.

The downside of this litter is that it tracks – a common consequence of lightweight and fine-grained litter. It’s also very expensive, over $2.00 per pound.


  • Made from sustainable resources
  • Forms tight, hard clumps for easy scooping
  • Much lighter than clay litter


  • May not flush well with low-flow toilets
  • Expensive, over $2.00 per pound

#5 Best Compostable: Almo Nature Unscented Clumping Grass Cat Litter

It’s wise to exercise caution when flushing cat litter – even when it’s designed for that purpose. This grass-based cat litter from Almo Nature is marketed as compostable, so you can easily alternate between flushing and composting to go easy on your plumbing system.

This plant-based litter is very lightweight and its fine-grained, sand-like texture is gentle on your cat’s paws. Like the previous pick, however, these qualities lend to a higher degree of tracking. Some customers report issues with dust as well, though it’s not the silica dust you get with clay litter.

Almo Nature’s clumping grass litter does a decent job with odor control and customers report that it clumps very well. It’s free from synthetic fragrance, relying on natural plant enzymes from the grass material to help neutralize odor.


  • Made from renewable grass materials
  • Lightweight and gentle on cats’ paws
  • Clumps well for easy scooping
  • Free from synthetic fragrance


  • Expensive, over $2.30 per pound
  • Fine grains tend to track

Is It Safe To Flush Cat Litter Down the Toilet?

Generally speaking, no. Most cat litters are designed to absorb liquid and some – like clumping cat litters – expand on contact. Flushing these types of litter down the toilet puts you at risk for damaged pipes that can be messy and expensive to fix.

Clay cat litter turns into a gooey cement-like substance when it gets wet. A small clump or two might not cause an issue, but frequently flushing cat litter can clog your pipes over time. Silica cat litter is lightweight and doesn’t clump, so it may flush more easily – but it doesn’t dissolve in water, either, so it can cause blockages over time.

What about cat litter that is advertised as flushable? Some natural cat litter is marketed as flushable and septic-safe, but you should still think twice before dumping clumps in the toilet.

For one thing, flushing cat litter – even cat litter designed for that purpose – can still clog your pipes.

Because it’s designed to dissolve in water, flushable cat litter doesn’t tend to form hard clumps. But if you don’t break up the clumps, they still might not flush well.

Soft clumps can also make the chore of scooping the litter box more difficult. Depending on the litter scoop you’re using, you may find yourself making several trips back and forth to the toilet each time you clean the litter box.

It also means you’ll be using more water to flush all those clumps away. This may be a serious concern if you live in an area that frequently experiences water shortages.

Finally, flushing cat litter can introduce pathogens into the environment.

Even if your plumbing system can handle flushable cat litter and the accompanying waste, you may want to think twice before flushing it.

Cat feces can carry bacteria, viruses, and parasites (like Toxoplasma gondii). When these pathogens are introduced into the public water system, they can make their way into the ecosystem and harm wildlife. Waste produced by outdoor cats and cats eating a raw food diet may have an even higher risk of parasite contamination.

If you’re concerned about the environmental impact of using cat litter, consider a natural alternative to clay and silica-based litter. Natural cat litter is made from environmentally friendly – and often sustainably sourced – materials. Many options are biodegradable and compostable.

How To Use Flushable Cat Litter

If you’re determined to give flushable cat litter a try, be sure to do so properly. If you’re not careful, you could still end up clogging or damaging your plumbing.

Before you start flushing cat litter down the toilet, do a test run. Add a tablespoon or so of the litter to a cup of water and wait for it to dissolve. Once the litter dissolves, flush it down the toilet and see what happens. If the litter flushes easily and completely, it may be safe to test with dirty litter and waste from the litter box. If your toilet leaves litter behind, reconsider flushing it in the future.

Here’s how to dispose of flushable cat litter properly:

  1. Flush only one clump at a time to prevent clogging.
  2. Divide large clumps into smaller pieces using a litter scoop before putting them in the toilet.
  3. Allow the clumps to soak for at least 10 minutes, but ideally 20 to 30 minutes.
  4. Only flush the clumps once they have dissolved – if they still look solid, wait.

Note: If you have a low-flow toilet, it’s especially important to do a test run. More water may be required to completely flush the litter away.

Alternatives to Flushable Cat Litter

Flushable cat litter isn’t the only option if you prefer to dispose of your cat’s waste via your home’s plumbing system there are some alternatives. The Cat Genie A.I. is an automatic litter box specifically designed to liquefy solid waste so it can be safely flushed down the toilet.

Check out our in-depth review of the Cat Genie A.I. here.

Cat litter made from natural materials like pine, corn, and wheat can be composted instead of throwing it out with the garbage. Take care, however, not to compost it near vegetable gardens or water sources where it may come into contact with food you and your family plan to consume.

About Mallory Crusta

Mallory is an NAVC-certified Pet Nutrition Coach. Having produced and managed multimedia content across several pet-related domains, Mallory is dedicated to ensuring that the information on Cats.com is accurate, clear, and engaging. When she’s not reviewing pet products or editing content, Mallory enjoys skiing, hiking, and trying out new recipes in the kitchen. She has two cats, Wessie and Forest.

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  1. Kathy

    I think these products are all American I apologise if I’m wrong but I don’t recognise any makes how about some from uk