Scented Clay
Arm & Hammer Clump & Seal
A budget-friendly clay litter with aggressive odor control and easy store availability, offset by strong fragrance and more tracking.
Overall score
8.7/10
Cost per day
$0.43
Reviewed Mar 7, 2026
Head-to-head comparison
Arm & Hammer Clump & Seal vs Arm & Hammer HardBall: Which Should You Buy?
Two Arm & Hammer clays built for different things. Clump & Seal is about fragrance and a low bag price. HardBall is about clumps that set fast and lift whole. HardBall costs a little more per day, and neither one is a low-dust litter.
ReviewCatLitter editorial teamUpdated Mar 7, 2026
This comparison page is maintained by the ReviewCatLitter editorial team and grounded in the same scoring framework used across the published review catalog.
Clumping Clay
Arm & Hammer HardBall
Fast-forming hard clumps with baking soda odor help, making it a strong mid-range clay pick if you can tolerate moderate dust.
Overall score
8.5/10
Cost per day
$0.47
Reviewed Nov 28, 2025
Overall winner
Arm & Hammer Clump & Seal
Arm & Hammer Clump & Seal is the strongest all-around pick in this comparison for budget shoppers prioritizing odor control.
Lowest daily cost
Arm & Hammer Clump & Seal at $0.43/day
Budget is often the deciding factor in this tier.
Best odor control
Arm & Hammer Clump & Seal at 7-day heavy fragrance
Odor control often decides whether a litter feels tolerable long term.
Tracks less outside the box
Arm & Hammer Clump & Seal at Tracks heavily
Tracking can be more important than overall score in small spaces.
What we actually measured
Every figure below is a reading from our own test runs, not a rating. Where a run never took a reading it says so.
| Reading | Arm & Hammer Clump & Seal | Arm & Hammer HardBall | Gap |
|---|---|---|---|
| Dust weighed per pourParticulates caught in the air while the bag goes into the box. Lower is better. | 0.45 mgbetter | 0.48 mg | 0.03 mg |
| Clumps that survived the drop testShare of clumps still whole after a three-foot drop. Higher is better. | not measured | 87% | only one side measured |
| Ammonia after one dayParts per million above the tray, 24 hours in. Lower is better. | 1 ppm | not measured | only one side measured |
| Ammonia after three daysParts per million above the tray, 72 hours in. Lower is better. | 3 ppm | not measured | only one side measured |
| Bag priceWhat the tested bag cost. Bag sizes differ, so read it next to cost per pound. | $16.99 | $19.99 | $3.00 |
| Cost per poundBag price divided by what is in the bag. Lower is better. | $0.45better | $0.53 | $0.08 |
| Cost per dayWhat the box costs to keep running each day. Lower is better. | $0.43better | $0.47 | $0.04 |
| Cost across a yearThat daily cost carried over a full year of use. Lower is better. | $157better | $172 | $15 |
Neither run recorded granules outside the box, so those rows are left out rather than filled in from a similar bag. The full test data shows every reading we have.
Why Arm & Hammer Clump & Seal wins this matchup
Primary tradeoff: Arm & Hammer Clump & Seal's weakest area here is dust control.
Best dust control here at 0.45mg per pour.
Strongest odor control in this set with 7-day heavy fragrance.
It is also the cheapest daily option at $0.43 per day.
| Product | ||
|---|---|---|
| Overall Score | 8.7 | 8.5 |
| Pricing | ||
| Price | $16.99 | $19.99 |
| Weight | 38 lbs | 38 lbs |
| Cost / Day | $0.43 | $0.47 |
| Performance | ||
| Dust Control | 6 0.45mg per pour | 6 0.48mg per pour |
| Clumping | 8.1 Good | 9 Hard and fast |
| Odor Control | 9.1 7-day heavy fragrance | 8 Baking soda support |
| Tracking Outside the Box | 6 Tracks heavily | 6 Moderate |
| Value for Cost | 9 $0.43/day · $16.99 | 8 $0.47/day · $19.99 |
| Features | ||
| Type | Scented Clumping Clay | Fast-Clumping Clay |
| Flushable | ||
| Scented | Yes | Yes |
| Our Verdict | ||
| Best For | Budget shoppers prioritizing odor control | Fast hard clumping on a mid-range budget |
| Read ReviewCheck Price | Read ReviewCheck Price | |
Best fit
Arm & Hammer Clump & Seal
Arm & Hammer Clump & Seal makes the most sense for budget shoppers prioritizing odor control.
Worth it if
You want a budget-friendly clay litter with aggressive odor control and easy store availability, offset by strong fragrance and more tracking.
Skip it if
You need a formula that solves budget shoppers prioritizing odor control better.
Best fit
Arm & Hammer HardBall
Arm & Hammer HardBall makes the most sense for fast hard clumping on a mid-range budget.
Worth it if
You want fast-forming hard clumps with baking soda odor help, making it a strong mid-range clay pick if you can tolerate moderate dust.
Skip it if
You need a formula that solves budget shoppers prioritizing odor control better.
If neither option is quite right
The closest litters we have tested to this matchup, on score and on price.
Budget Clumping Clay
Arm & Hammer Super Scoop
Weighed 0.52mg per pour and runs at $0.35 a day.
Best for lowest-cost clumping litter
Scented Clumping Clay
Fresh Step Scented
Weighed 0.42mg per pour and runs at $0.40 a day.
Best for convenient store-bought clay
Paper Pellet
Ökocat Paper Pellet
Weighed 0.00mg per pour and runs at $0.52 a day.
Best for post-surgery or severe dust sensitivity
Read the full reviews
Use this page to choose a winner quickly, then open the full product reviews if you want the long-form test notes.
Keep comparing nearby options
Related matchups that share one of the same products and answer the next likely decision.
Related matchup
Dr. Elsey's Ultra vs Arm & Hammer Clump & Seal
Choose Ultra if dust or fragrance bother anyone in the house. Choose Clump & Seal if the price of the bag decides it.
Winner: Dr. Elsey's Ultra
Related matchup
Arm & Hammer Clump & Seal vs Purina Tidy Cats
Clump & Seal is worth the step up from Tidy Cats if smell is the reason you are shopping. Tidy Cats is cheaper by the bag and easier to find.
Winner: Arm & Hammer Clump & Seal
Related matchup
Fresh Step Scented vs Arm & Hammer Clump & Seal
Two perfumed supermarket clays. Clump & Seal holds smell down longer and clumps harder. Fresh Step is the cheaper bag and pours a little less dust.
Winner: Arm & Hammer Clump & Seal
Related matchup
Arm & Hammer Clump & Seal vs Dr. Elsey's Cat Attract
Cat Attract is what you try when your cat is missing the box. Clump & Seal is what you buy when the bag price decides it.
Winner: Dr. Elsey's Cat Attract
Related matchup
Dr. Elsey's Ultra vs Arm & Hammer HardBall
Ultra is the cleaner litter. HardBall is the cheaper way to get clumps that set fast and come out in one piece.
Winner: Dr. Elsey's Ultra
Related matchup
Arm & Hammer Clump & Seal vs Boxiecat Premium
Boxiecat is the quiet, unscented, easy-scoop bag. Clump & Seal is the cheap, heavily perfumed one.
Winner: Boxiecat Premium
Quick Answers
Which is better: Arm & Hammer Clump & Seal or Arm & Hammer HardBall?
Arm & Hammer Clump & Seal comes out ahead on the balance of dust, clumping, odor control, tracking and daily cost. Arm & Hammer HardBall is still the one to buy for fast hard clumping on a mid-range budget.
Which is cheaper per day: Arm & Hammer Clump & Seal or Arm & Hammer HardBall?
Arm & Hammer Clump & Seal runs at $0.43 a day against $0.47 for Arm & Hammer HardBall.
Which controls smell better: Arm & Hammer Clump & Seal or Arm & Hammer HardBall?
Arm & Hammer Clump & Seal scored higher: 7-day heavy fragrance, against baking soda support for Arm & Hammer HardBall.
Which tracks less outside the litter box: Arm & Hammer Clump & Seal or Arm & Hammer HardBall?
Arm & Hammer Clump & Seal keeps more litter in the box: tracks heavily, against moderate for Arm & Hammer HardBall.