How Much Does Arm & Hammer HardBall Cost?
About $14.30 a month for one cat, $28.59 for two.
Quick answer
- 1Arm & Hammer HardBall costs $14.30 a month and $171.55 a year for one cat.
- 2The bag itself is $19.99 for 38 lbs, $0.53 a pound, $0.47 a day.
- 3By cost per day it ranks 8 of 17 litters we track, against a $15.82 typical monthly bill.
- 4One 38 lbs bag lasts 5 weeks with one cat, 3.5 weeks in a multi-cat home.
Cost breakdown
| Bag price | $19.99 |
|---|---|
| Bag size | 38 lbs |
| Cost per pound | $0.53 |
| Cost per day (1 cat) | $0.47 |
| Cost per month (1 cat) | $14.30 |
| Cost per year (1 cat) | $171.55 |
Yearly cost by number of cats
| Cats | Monthly | Yearly |
|---|---|---|
| 1 cat | $14.30 | $171.55 |
| 2 cats | $28.59 | $343.10 |
| 3 cats | $42.89 | $514.65 |
| 4 cats | $57.18 | $686.20 |
Each row multiplies the tested one-cat cost per day by the cat count and then by 365 days. Real households sometimes run higher, because a shared box gets scooped and refilled more than a straight multiplier assumes.
What you pay for
Arm & Hammer HardBall, worked out
Arm & Hammer HardBall runs $0.47 a day, against a $0.52 daily median across the 17 litters we track. By cost per day, HardBall ranks 8 of 17.
- One cat, one year
- $171.55
- Two cats, one year
- $343.10
Dr. Elsey's Ultra matches or beats HardBall on clumping for less.
Clumping and dust, for the price
Arm & Hammer HardBall scored 9/10 for clumping (Hard and fast) and 6/10 for dust (0.48mg per pour) when we tested it. A cheaper litter on this list matches or beats that clump score, so the extra money here is not buying a harder clump. For a lower dust reading at a lower price, look at Feline Pine, Fresh Step or Dr. Elsey's Ultra.
Cheaper with the same scores
How long one bag lasts
Cheaper and pricier tested alternatives
Arm & Hammer HardBall sits between Dr. Elsey's Ultra and Ökocat Paper Pellet on cost per day.
Questions people ask
How much does Arm & Hammer HardBall cost per month?
Arm & Hammer HardBall runs about $14.30 a month for one cat, based on our tested cost of $0.47 a day. A 38 lbs bag costs $19.99. That puts it at rank 8 of 17 litters we track by daily cost, against a $15.82 typical monthly bill.
How much does Arm & Hammer HardBall cost per year?
For one cat, Arm & Hammer HardBall costs about $171.55 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 Arm & Hammer HardBall last?
One 38 lbs bag lasts 5 weeks with a single cat and 3.5 weeks in a multi-cat home, based on our testing. We rate it best for fast hard clumping on a mid-range budget.
Does Arm & Hammer HardBall come in a bulk or warehouse-size bag?
Yes. The 38 lbs bag we tested is warehouse-size, the kind sold at Costco, Sam's Club, or a big-box pet aisle.
More on Arm & Hammer HardBall and cat litter cost
- Dr. Elsey's Ultra vs Arm & Hammer HardBallHead to head
- Arm & Hammer Clump & Seal vs Arm & Hammer HardBallHead to head
- Dr. Elsey's Cat Attract vs Arm & Hammer HardBallHead to head
- How much does cat litter cost overallGuide
- Cheapest litter per pound, rankedGuide
- Compare warehouse-size bagsGuide
- Compare cat litters side by sideGuide
- We weighed the dust off 16 cat littersGuide
Purrify - keep the cheap bag, add the odor control
A cheap litter your cat likes is worth keeping. Purrify is activated carbon you add to it, so smell is not the reason to trade up. It costs what it costs on their site, and we have not measured what it saves you.
Read our Purrify guide to what a carbon additive does to a litter you already own.
- Activated carbon, sold in bags
- 5.0 Google rating
- Stocked in 40+ pet stores across Canada
Price and cost figures come from the same catalog used across every review and comparison page, checked on 2025-12-02.