Zero Mess by World's Best Advanced Cat Litter

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24-lb bag
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Make kitty cleanup quick, easy, and tidy with the Zero Mess by World's Best Advanced Cat Litter. It has a patented blend of naturally super-absorbent whole kernel corn and plant fibers to trap liquids and odors in tight clumps, with no dust or mess. Designed for high-performance use, this multi-cat-strength litter is lightweight, 99% dust-free, 100% natural, and totally flushable for easy cleaning. By forming clumps quickly, it also prevents the litter from sticking to the litter box. Plus, it’s septic-safe, eco-friendly, and free of toxins or silica so it’s safe for the whole family.

Key Benefits
  • Traps liquids and odors in tight clumps with patented blend of super-absorbent whole kernel corn and plant fibers.
  • Uses only clump-forming plant materials with no silica, for a formula that’s 99% dust-free.
  • 100% natural formula uses concentrated granules so you can use less litter and get better performance.
  • Quick clumping action provides powerful odor control while preventing litter from sticking to the litter box.
  • Perfect for heavy duty use and multiple cats, and is flushable for easy cleanup.

Always wash your hands thoroughly after handling used cat litter, as cat feces may contain Toxoplasma gondii—a parasite that can cause toxoplasmosis. Pregnant or nursing women, as well as children and anyone with a weakened immune system, should avoid handling used cat litter. Always handle litter in a ventilated area to avoid inhalation. Keep contents and packaging out of reach of children and pets. Seek medical help in case of accidental ingestion.

This item is excluded from the first-time Autoship promotion.


Corn and plant fibers.

See all items by Zero Mess

  • Item Number
  • Weight
    24.0 pounds
  • Brand

    World's Best

  • Litter & Bedding Type


  • Litter Feature

    Clumping, Unscented, Flushable, Biodegradable, Multi-Cat, Odor Control

  • Start with a clean or new litter box and mix one-third World's Best Cat Litter and two-thirds your current litter.
  • When your cat is comfortable. change the proportion to two-thirds World's Best Cat Litter.
  • Make the switch complete and use only World's Best Cat Litter. Maintain 2-3 inches of clumping cat litter in the box.

Additional Instructions

  • Only dispose of used cat litter in trash. Do not bury or dispose of outdoors, in gutters or storm drains to avoid environmental contamination.
  • Not for internal use. Not meant for use as compost or as a traction aid.
  • Store in a cool, dry place. Product filled by weight; some settling may occur.
Transition Instructions

When you switch litters, your cat may paw or even taste the new litter. This is normal! World's Best Cat Litter™ is made from 100% natural corn and plant fibers, and won't harm your cat or kitten if they sample it.

Start by mixing in 1/3 World’s Best Cat Liter the first week. Then use 2/3 the second week. By the third week, you should be using 100% World’s Best Cat Liter.

Customer Reviews
93 Reviews 93 Reviews 3.6 out of 5 Stars

68% Recommend

68% of reviewersrecommend this product

3.6 / 5

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  • Just began using Zero Mess

    By on

    I have been using World's Best since it came to the market. I love it. I decided to try the Zero Mess with my Auto Ship. I just began using it three days ago. I added it to the world's best I already had. What concerns me about this new litter by World's Best is that it doesn't say anywhere on the package that it is flushable. I know their original was. I don't know if I will keep using it because it costs more and the bag is much smaller. It would be good to know what is the exact difference between the original and zero mess. Let you know how things turn out in 30 days.

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  • Still dusty

    By on

    I like this cat litter, but it doesn't seem to be any different than the green or purple bags of the "worlds best cat litter. All the ones I have used of worlds best have worked really good for odor and how long it lasts, don't have to change litter so often. I will keep buying product!

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  • Pretty Darn Clean!

    By on

    Out of all the WBC litter, this one is my favorite. It really clumps easily and does not turn dusty. There is no odor in my home when using this product. I like that it is flushable and safe for my cats and for the environment.

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  • Zero Mess by Worlds Best Litter

    By on

    The litter lives up to its title. We have three cats. Order control and dust are very important to us and our cats. We are very happy with this brand. Tried many others but this is by far the best for us.

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  • Really dusty!

    By on

    I have been using Word’s best litter for a very long time and it just seems like in the last couple years they have changed the formula and it has become more dusty! I have to swiffer my floors daily due to the layer of litter dust! And this new one is just as bad - not worth the extra money! I really wish there was such a thing as zero dust

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  • Best cat litter

    By on

    I can't use clay litter since it causes health problems for both me and my cat. I've been using World's Best as an alternative for years but the previous formula was really dusty and I was constantly cleaning up dust tracked around my house (even with litter mats). This new formula has completely resolved the dust issue. I highly recommend it.

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  • Like it, so far!

    By on

    I just switched over to the Zero Mess from the original World's Best formula five days ago. I immediately noticed that the clumps seemed to be smaller and tighter when I cleaned the box, even with my older cat, who has compromised kidney function and urinates larger amounts. There also seems to be less scatter. Odor is contained as well as with the original formula- perhaps even better. There also seems to be less dust, which is a big plus (even though the original formula states on the bag that it is 99% dust free, as does the Zero Mess). So far, I am pleased with my purchase, even though this formula costs a bit more.

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  • What a mess

    By on

    This litter does come clean from the sides of the litter box and clumps large enough to not go through the slots in the scooper, but that's about all the positive commenting I can do. The dust is everywhere. I will not be ordering any more of it.

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  • Dusty dusty dusty

    By on

    Holy cow. The tracking is low for the kernels themselves but after two to three days I've got dust EVERYWHERE. They track the dust all over. Even to the kitchen. And the urine clumps poorly. I purchased a new scooper to try and agitate the litter less but it isn't helping. My search continues!

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  • Doesn't last as long as claimed

    By on

    Firstly, the claims made on the bag as to how long it lasts are absolutely false. I have one cat and one bag doesn't even last 3 weeks. It does perform slightly better than the regular formula but not enough to justify the price hike. This formulation also requires you to use a lot of litter box deodorizer as it does not control odors at all. Three stars because my cat likes it and it performs better than tidy cat. It is less dusty than typical litters.

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