The 5 Best Flushable Cat Litters
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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.
Compare Best Flushable Cat Litters
1. World's Best Multi-Cat Unscented Clumping Corn Cat Litter
2. Okocat Super Soft Clumping Wood Unscented Cat Litter
Best Pellet Style Litter
3. Rufus & Coco Wee Kitty Unscented Clumping Corn Cat Litter
Best Lightweight Litter
4. Cocokitty Natural Lightweight Coconut Cat Litter
Best Non Clumping
5. Next Gen Pet Products Pet Products Green Tea Unscented Clumping Wood Cat Litter
Clumping Corn Pellets
Wood with Green Tea
Overall great performance
Made from lumber that might otherwise go to waste
All-around excellent performance at a low price
Lightweight litter is easier to handle
Has a pleasant green tea scent
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.
We highly recommend looking at the comparison table we have below where we highlighted the features of each product. You’ll also find more detailed information about each product later in the article.
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.
Our Top Picks For The Best Flushable Cat Litters
World's Best Multi-Cat Unscented Clumping Corn Cat Litter
- Type: Clumping Corn
- Made In: United States
- Key Strengths: Overall great performance
- 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
- Affordable compared to other biodegradable cat litter
- Can be a little bit dusty
- Not every user is impressed by this product’s odor control ability
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.
Okocat Super Soft Clumping Wood Unscented Cat Litter
- Type: Clumping Wood
- Made In: Germany
- Key Strengths: Made from lumber that might otherwise go to waste
- A good alternative to traditional wood pellets for cats with sensitive paws
- Long-lasting odor control
- Made from reclaimed lumber
- Forms soft, breakable clumps
- Some reviewers say it tracks a lot
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.
Rufus & Coco Wee Kitty Unscented Clumping Corn Cat Litter
- Type: Clumping Corn Pellets
- Made In: Australia
- Key Strengths: All-around excellent performance at a low price
- Highly absorbent with good clumping ability
- Good odor control
- Low tracking for a cleaner home
- Several reviewers say the litter is extremely dusty
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.
Cocokitty Natural Lightweight Coconut Cat Litter
- Type: Coconut
- Made In: United States
- Key Strengths: Lightweight litter is easier to handle
- Extremely lightweight
- Soft, soil-like texture feels great under cats’ paws
- Odor control isn’t excellent
- One of the messiest cat litters you can buy
- extremely lightweight litter tends to scatter
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.
Next Gen Pet Products Pet Products Green Tea Unscented Clumping Wood Cat Litter
- Type: Wood with Green Tea
- Made In: Japan
- Key Strengths: Has a pleasant green tea scent
- Minimal tracking and low-dust
- Has a pleasant green tea smell
- Neutralizes odors
- Safe to flush
- Doesn’t clump, so it’s not ideal for those who like clumping litter
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.