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The 5 Best Flushable Cat Litters

September 1, 2019

The 5 Best Flushable Cat Litters

The best flushable cat litter is more than safe to flush—it’s easy to love. It forms easy-to-scoop clumps but won’t clog your plumbing. It neutralizes odors, doesn’t make plumes of dust, and is easy on your cat’s nose and toes.

But that’s a lot to ask for.

Most of the best litters on the market are clumping clay, which is a no-go for would-be flushers. Of the remaining products, few deliver the kind of performance that marks a trusty long-term litter.

I’ve spent hours studying the cat litter market, identifying the select few products that perform just as well in the toilet as they do in the litter box. Because it’s a well-regarded product with a reputation for strong clumping, great odor control, and all-around great performance, I’ve chosen World’s Best Cat Litter Clumping Formula for Multiple Cats as the overall best flushable cat litter on the market.

Keep reading to learn more about this litter and our other picks for the top 5 best flushable cat litters you can buy. Before we jump into the reviews, let’s talk about what makes a good flushable litter. Read until the end to find out why, even when you’re using one of the best flushable cat litters on the market, you should probably toss it anyway.

IMAGEPRODUCT
  • One of the only litters that’s undergone testing to show that it’s flushable
  • Creates firm, cohesive clumps
  • Lightweight
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  • A good alternative to traditional wood pellets for cats with sensitive paws
  • Long-lasting odor control
  • Made from reclaimed lumber
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  • Highly absorbent with good clumping ability
  • Good odor control
  • Low tracking for a cleaner home
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  • Extremely lightweight
  • Soft, soil-like texture feels great under cats’ paws
  • Affordable
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  • Minimal tracking and low-dust
  • Has a pleasant green tea smell
  • Neutralizes odors
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Which Types Of Cat Litter Are Safe To Flush?

Almost any type of cat litter can be flushed. The only type that you can’t flush without wrecking your plumbing is clumping clay litter. This type of litter is made from sodium bentonite clay, an extremely absorbent clay that forms a cement-like sludge when it comes into contact with water.

The property that makes this type of litter so effective and so popular is the same property that makes it a menace to your plumbing. Lest it jams up your plumbing and damages your septic system, don’t flush clumping clay litter.

Though you can flush non-clumping clay litter, it’s not a good idea. Though it doesn’t expand or solidify as clumping clay does, wet clay litter can also burden your plumbing.

The exception to the “do not flush” rule is biodegradable cat litter. Almost all biodegradable cat litter, including corn, cassava, walnut, coconut, wood, and wheat litter, is flushable.

Best Flushable Cat Litter: Our Top 5 Picks

Overall Best: World's Best Cat Litter Clumping Litter Formula for Multiple Cats

Product Info:

  • Type: Clumping Corn
  • Price per Pound: $0.99/lb
  • Made In: United States
  • Key Strengths: Overall great performance

Pros:

  • One of the only litters that’s undergone testing to show that it’s flushable
  • Creates firm, cohesive clumps
  • Made from unscented corn without any irritating additives
  • Lightweight
  • Affordable compared to other biodegradable cat litter

Cons:

  • Can be a little bit dusty
  • Not every user is impressed by this product’s odor control ability

World’s Best Cat Litter is among the leading biodegradable cat litter brands. In addition to above-average clumping and good odor control, the products are known for their flushability.

Indeed, World’s Best Cat Litter is one of the only companies that says their products have been tested and proven flushable and septic safe. 

The litter is made from corn compressed corn particles and, according to most reviewers, forms cohesive, easy-to-scoop clumps.

Though it doesn’t produce the hazardous silica dust that clay litter makes, World’s Best Cat Litter tends to create a bit of a plume of corn dust when you pour it into the box, but it seems to settle quickly and won’t puff up much when digging or scooping.

Overall, this litter is a high-performance product and one of the most trusted biodegradable litters on the market.

Runner-Up: ökocat Super Soft Natural Wood Clumping Litter

Product Info:

  • Type: Clumping Wood
  • Price per Pound: $1.10/lb
  • Made In: Germany
  • Key Strengths: Made from lumber that might otherwise go to waste

Pros:

  • A good alternative to traditional wood pellets for cats with sensitive paws
  • Long-lasting odor control
  • Made from reclaimed lumber

Cons:

  • Forms soft, breakable clumps
  • Some reviewers say it tracks a lot

Traditionally, wood litter doesn’t clump and is shaped into cylindrical pellets. This litter is different. It’s made from reclaimed wood milled into small granules similar in size to traditional clay litter. The litter is highly-absorbent and forms soft clumps for easier scooping.

According to the company, this litter can control odors for up to 7 days with Odor Shield Technology. Customer reviews back this up.

The litter’s biggest shortcoming is that it doesn’t create rock-solid clumps and tends to track quite a bit.

The company says the litter is flushable but recommends that users flush one clump at a time, never dumping large amounts down the drain.

Best Pellet-Style Litter: Rufus & Coco Wee Kitty Clumping Pellets

Product Info:

  • Type: Clumping Corn Pellets
  • Price per Pound: $2.16/lb
  • Made In: Australia
  • Key Strengths: All-around excellent performance at a low price

Pros:

  • Highly absorbent with good clumping ability
  • Good odor control
  • Low tracking for a cleaner home

Cons:

  • Several reviewers say the litter is extremely dusty
  • Expensive

Rufus & Coco says that this litter breaks down when immersed in liquid, making it safe to flush. Customers advise that you let the clumps soak in the toilet bowl before you flush it.

Like our top pick, this litter is made from corn. Unlike the World’s Best Cat Litter, the particles are pellet-shaped. The pellets are slightly heavier than the small granules, helping to reduce tracking. Though the pellets have a different shape than most cat litter, they are compatible with some traditional litter scoops.

The biggest complaint about this litter is its dustiness—some reviewers say that it creates clouds of dust when poured or that the dust gets in their eyes while scooping.

Best Lightweight Litter: CocoKitty All-Natural Lightweight Long-Lasting Coconut Cat Litter

Product Info:

  • Type: Coconut
  • Price per Cubic Foot: $35.98/cubic foot (roughly equivalent to 160 lbs non-clumping clay)
  • Made In: United States
  • Key Strengths: Lightweight litter is easier to handle

Pros:

  • Extremely lightweight
  • Soft, soil-like texture feels great under cats’ paws
  • Affordable

Cons:

  • Odor control isn’t excellent
  • One of the messiest cat litters you can buy
  • extremely lightweight litter tends to scatter

Flushable cat litter itself can be a back saver—sparing you from hauling sacks of dirty litter up and down stairs. An exceptionally lightweight litter that’s also safe to flush can help even more. CocoKitty is made from fluffy, soil-esque coconut pith, an airy and voluminous material. Each bag weighs less than 5 lbs but is equivalent to about 80 lbs of non-clumping clay litter. One bag lasts for up to two months in a single cat home.

The coconut pith has activated carbon to absorb odors and sponge-like capillaries, which soak up moisture and trap odors. It naturally resists bacterial growth, mold, and fungus. A blend of plant extracts allows the litter to form clumps, making cleanup easier.

Though the litter appears to do well in most departments, including flushability, its biggest problem is scattering and tracking. As a featherlight product, CocoKitty tends to go flying and fluffing out of the litter box.

Best Non-Clumping: Next Gen Pet Green Tea Fresh Cat Litter

Product Info:

  • Type: Wood with Green Tea
  • Price per Pound: $3.99/lb
  • Made In: Japan
  • Key Strengths: Has a pleasant green tea scent

Pros:

  • Minimal tracking and low-dust
  • Has a pleasant green tea smell
  • Neutralizes odors
  • Safe to flush

Cons:

  • Doesn’t clump, so it’s not ideal for those who like clumping litter

This litter is a wood-based litter that is infused with green tea leaves, which use the astringent catechin to reduce odors and fight bacteria. The company claims that this helps to neutralize odors and keep the litter box smelling fresh.

The product gets mixed reviews, but most agree that it’s a competent litter. Those who like it praise the natural green tea smell.

The litter is lightweight, low-dust, and, yes, it’s flushable—according to the company, at least.

Whether Or Not You Find A Good Flushable Litter, Scooping And Tossing Is Still The Best Approach.

Fewer and fewer cat litter makers are advertising their products as flushable. Those who do warn against doing so in the fine print. There are a few good reasons to abstain from flushing.

Even if a given cat litter is safer to flush than clumping clay, that doesn’t mean it’s good for your plumbing.

Any biodegradable litter can burden delicate plumbing or a septic system, causing undue wear and potentially damaging your system over time. Even the best flushable cat litter should go down gradually. Go slowly and let each clod dissolve before you flush it.

Flushing cat waste has another consequence that affects more than your plumbing or you alone. If you’re connected to a city sewer, flushing your cat’s waste means introducing parasites into the water. Most cats’ feces is infested with Toxoplasma gondii, a parasite that seldom makes cats or healthy adults sick, but which can kill or disable a human fetus, sea otter, or other marine mammals. In fact, Toxoplasma gondii has been implicated in the death of endangered sea otters off the coast of California.

Wastewater treatment facilities are no match for this hardy parasite, which goes on living in the water and makes its way to the ocean via rainwater runoff.

With so many cats living outside and using nature’s litter box, it’s impossible to stop T. Gondii from making its way into the water supply and the sea, but you can minimize your impact by keeping your cat’s litter out of the toilet.

Mallory Crusta

Mallory Crusta is a blogger and adventurecat enthusiast who brings you the facts about cat products, wellness, and care. She's the co-founder of Wildernesscat, a resource for savvy cat guardians who want to give their felines richer, healthier lives. Visit Wildernesscat for product reviews, radically natural nutrition tips, and lifestyle inspiration
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