Warehouse-Size Cat Litter Bags Compared
Every 35 lb and heavier bag in our tests, side by side on price, cost per pound, and how long it actually lasts.
Quick answer
- 1Among warehouse-size bags, Frisco by Chewy is the cheapest per pound at $0.33 for a 40 lbs bag.
- 2Bag size is not the only thing that matters for a big purchase - check how long it lasts your household below before buying a bag you have to carry and store.
10 warehouse-size bags, cheapest per pound first
| Product | Bag size | Bag price | Cost/lb | Lasts, 1 cat | Lasts, multi-cat |
|---|---|---|---|---|---|
| Frisco by Chewy | 40 lbs | $13.00 | $0.33 | 4 weeks | 2.8 weeks |
| Arm & Hammer Super Scoop | 40 lbs | $13.99 | $0.35 | 4.5 weeks | 3 weeks |
| Purina Tidy Cats | 35 lbs | $15.49 | $0.44 | 4 weeks | 2.8 weeks |
| Arm & Hammer Clump & Seal | 38 lbs | $16.99 | $0.45 | 5 weeks | 3.5 weeks |
| Fresh Step Scented | 42 lbs | $18.99 | $0.45 | 4.5 weeks | 3 weeks |
| Feline Pine | 40 lbs | $19.99 | $0.50 | 6 weeks | 3.5 weeks |
| Dr. Elsey's Ultra | 40 lbs | $20.99 | $0.52 | 7 weeks | 4.5 weeks |
| Arm & Hammer HardBall | 38 lbs | $19.99 | $0.53 | 5 weeks | 3.5 weeks |
| Dr. Elsey's Cat Attract | 40 lbs | $26.99 | $0.67 | 7 weeks | 4.5 weeks |
| Boxiecat Premium | 40 lbs | $27.99 | $0.70 | 7 weeks | 4 weeks |
A bag qualifies here at 35 lbs or heavier, roughly the size a shopper means by "warehouse size" - too big to carry home from a corner store.
Before you buy the big bag
A giant bag is only a good deal if you can store it dry and use it before it goes stale in the bag. Clay does not spoil, but a damp garage or basement will clump it early and waste the saving.
Cost per pound tells you which bag is cheaper. Longevity tells you whether that bag actually lasts as long as its size suggests - the two do not always move together, since a weaker clumping litter gets thrown away half-used more often.
Among the 10 warehouse-size bags here, cost per pound runs from $0.33 to $0.70, with a median of $0.47. That median sits below the $0.67-a-pound median across all 17 tested litters, big and small bags together, so size alone is not a guaranteed discount here - it usually helps, but a warehouse bag still has to be checked against the smaller sizes on its own product page.
Questions people ask
Is a bigger bag of cat litter always cheaper?
Usually cheaper per pound, but not always by much. A few of the largest bags in our tests cost more per pound than a mid-size bag from a different brand, so check cost per pound before assuming size wins.
Where can I buy warehouse-size cat litter bags?
Club stores like Costco and Sam's Club, and the bigger bag sizes on Chewy, Amazon, and most pet-store chains, regularly carry these bag weights. We test the bag itself, not a specific store's price, so check local pricing before you drive out for one.
How long does a warehouse-size bag actually last?
It depends on the litter, not just the weight. Two 40 lb bags in our tests last different amounts of time with the same cat, because clumping and granule density differ by product - see the longevity row for each bag below.
Purrify - the additive we use in our own homes
Activated carbon you add to the litter you already buy. We have used it in our own homes for years, and with dozens of friends and family. You can keep your existing base litter.
Read our Purrify guide to picking a litter for odor control.
- Activated carbon, sold in bags
- 5.0 Google rating
- Stocked in 40+ pet stores across Canada
Figures come from the tested bag price and weight in our product catalog, last checked 2026-09-02. We price the bag we bought, not a specific store's shelf price.