How Much Does World's Best Cat Litter Cost?
A 28 lbs bag of World's Best Cat Litter costs $29.99, about $0.58 a day for one cat. Here is the full monthly and yearly math.
Price and cost figures come from the same catalog used across every review and comparison page, last checked Mar 6, 2026.
Quick answer
World's Best Cat Litter costs $17.64/month and $211.70/year for one cat. The bag itself is $29.99 for 28 lbs, working out to $1.07 a pound and $0.58 a day in our tests.
Cost breakdown
| Bag price | $29.99 |
| Bag size | 28 lbs |
| Cost per pound | $1.07 |
| Cost per day (1 cat) | $0.58 |
| Cost per month (1 cat) | $17.64 |
| Cost per year (1 cat) | $211.70 |
Yearly cost by number of cats
| Cats | Monthly | Yearly |
|---|---|---|
| 1 cat | $17.64 | $211.70 |
| 2 cats | $35.28 | $423.40 |
| 3 cats | $52.92 | $635.10 |
| 4 cats | $70.57 | $846.80 |
Multi-cat estimates scale the single-cat cost by cat count. Real households sometimes run higher, because a shared box gets scooped and refilled more than a straight multiplier assumes.
How long one bag lasts
Worth the price if: You want eco-friendly and flushable litter with very good daily usability.
Skip it if: You're on a tight budget or want the absolute lowest dust numbers.
Cheaper and pricier tested alternatives
Frequently asked questions
How much does World's Best Cat Litter cost per month?+
World's Best Cat Litter runs about $17.64 a month for one cat, based on our tested cost of $0.58 a day. A 28 lbs bag costs $29.99.
How much does World's Best Cat Litter cost per year?+
For one cat, World's Best Cat Litter costs about $211.70 a year. Multiply by cat count for a rough multi-cat estimate; real multi-cat homes often run a bit higher because boxes get used harder.
How long does a bag of World's Best Cat Litter last?+
One 28 lbs bag lasts 6 weeks with a single cat and 4 weeks in a multi-cat home, based on our testing.