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Find a quick summary of findings for each product from this brand below, with a link to detailed reviews.
World’s Best Cat Litter Multiple Cat
A corn based cat litter with excellent odor and dust control. Flushable and soft on the paws.
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Our Review Process
We bought the cat litter reviewed in this article for a hands on test. This includes dust testing with an air quality monitor and letting our cats use the litter.
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About Us
The primary purpose of this website is to fact check products, perform independent research, and provide easy-to-read reviews and summaries. I am not a vet and this isn’t a replacement for medical advice.
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World’s Best Cat Litter Review: Multiple Cat
Review Summary
Great
World’s Best cat litter for multiple cats offers a range of benefits that make it a stand out choice, but its high price and occasional clump issues slightly mar an otherwise top-tier litter experience.
Key Features
| Feature | Note |
|---|---|
| Material | Corn |
| Clumping | Yes |
| Flushable | Yes |
| Packing type | Plastic |
| Re-sealable bag | No |
| Scented | No |
| Odor control additive | Yes |
| Bag sizing options | 8lbs; 15lbs; 32lbs |
Product Testing Data
| Test | Result |
|---|---|
| Sizing | < 3mm |
| Softness | Good |
| Tracking | Low |
| Absorption ratio | 70% |
| Did cat use? | Yes |
| Density (g/ml) | 0.6 |
| Air Quality | 15cm | 15cm pat test | 30cm |
|---|---|---|---|
| Max PM2.5 | 4.4 | 4.0 | 4.1 |
| Average PM2.5 | 3.4 | 3.3 | 3.3 |
| Max AQI | 18 | 16 | 17 |
| Average AQI | 14 | 14 | 13 |
Cat Preference
I tested World’s Best cat litter multiple cats compared to a control cat litter (clay).
Here’s how often the litter trays were used (litter spot rotated on the second day). Our cats seemed to cover their waste better with World’s Best.
- Test: World’s Best Multiple cat litter
- Control: Smitten clay litter
| Day | Test | Control |
|---|---|---|
| 1 | 1 | 0 |
| 1.5 | 4 | 3 |
| 2 | 0 | 1 |
| 2.5 | 5 | 4 |
| Total | 10 | 8 |
Review Notes
- Review date: 12 – 17 September 2023
- Testing methodology: 1.0 (see here)
- Test cat litter: World’s Best Multiple Cat Litter
- Control cat litter: Smitten Clay Litter
- Cats: 2 cats (Cleo and Maxi) (see our cat testers here)
- Temperature: ~22 degrees Celsius
- Humidity: ~59%
Changelog:
- 21 September 2023 – Updated article using cat litter testing methodology 1.0
More About World’s Best Cat Litter
Who are World’s Best Cat Litter?
World’s Best are a cat litter brand that uses corn in their range of unscented and scented litters. They claim benefits such as more value for money and better clumping over clay.
The products are environmentally friendly and flushable. They do not use clay or any other chemicals in their products.
Who Owns World’s Best Cat Litter?
The company started in 1996 and is an Iowan based company.
Is World’s Best Cat Litter Safe?
The PM2.5 dust levels stayed within low and healthy ranges when tested with a monitor.
This suggests World’s Best cat litter is safe for those with heart and lung disease, who are vulnerable to these fine particles.
This litter uses corn which may produce aflatoxin, a type of mold that grows in moist conditions. The company report they test for aflatoxin, but not glyphosate.
Glyphosate is a herbicide used on crops like corn and wheat. The link between glyphosate and health issues isn’t clear in cats and it’s not a proven carcinogen.
Some cats may exhibit pica, the condition of eating non-edible substances. This can relate to medical problems or nutrition imbalances (e.g. vitamin D toxicity).
For this reason, it’s best to check with a vet if you notice your cat eating cat litter.
Related articles:
Does World’s Best Cat Litter Smell Bad?
I didn’t experience any bad smell using this litter.
The litter tray got emptied twice a day in this review, which helped keep odor down.
Related articles:
What Is the Ingredient in World’s Best Cat Litter?
Corn.
How Often Should You Change World’s Best Cat Litter?
The manufacturer suggests changing one 8 lb. bag of World’s Best cat litter every 38 days if you’ve got one cat.
For those with two cats, it will last about 19 days, and 12 days for three cat households. Results may vary depending on the size of the cat.
Expert guidelines suggest maintaining a litter depth of at least 1.25 inches (3 cm) to ensure a satisfactory experience for a cat. Once the litter no longer absorbs, give it a change.
World’s Best Cat Litter Alternatives
Similar options to check out include:
- Smart Cat: A corn and wheat based litter made in the USA (not reviewed)
- Nature’s Miracle: A corn cob litter with a enzymatic formula for odor control (not reviewed)
Can You Flush World’s Best Cat Litter Down the Toilet?
Yes, this cat litter is flushable.
We had no issues flushing this cat litter down the toilet.
Of course, it’s up to you how you want to dispose of waste.
Does Worlds Best Cat Litter Contain Sodium Bentonite?
No.
World’s best cat litter is made using whole-kernel corn.
Conclusion
World’s Best Cat Litter is a corn-based litter which is low dust and great for odor control. It also offers a cat friendly soft texture and forms good solid clumps.
The advantage of being flushable is a nice perk too, if you want to do that. Whilst it’s priced a tad higher than others and needs frequent cleaning to avoid sticking – it’s a winner.
