
Arm & Hammer Clump & Seal
A budget-friendly clay litter with aggressive odor control and easy store availability, offset by strong fragrance and more tracking.
Boxiecat Premium is the strongest all-around pick in this comparison for lowest-maintenance scooping.

A budget-friendly clay litter with aggressive odor control and easy store availability, offset by strong fragrance and more tracking.

Flat Top clumping tech keeps litter on the surface, making scooping cleaner and easier than typical premium clay formulas.
Boxiecat is the quiet, unscented, easy-scoop bag. Clump & Seal is the cheap, heavily perfumed one. They sit at opposite ends of the clay shelf, so decide on the fragrance first: in a small apartment it is the thing people notice and cannot unnotice.
This comparison page is maintained by the ReviewCatLitter editorial team and grounded in the same scoring framework used across the published review catalog.
Choose between them on texture, clumping, dust and price. Then, if the room still tells you where the box is, Purrify is activated carbon you mix into whichever bag you chose. It is what we use in our own homes.
Read our Purrify guide to picking a litter for odor control.
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 | Boxiecat Premium | Gap |
|---|---|---|---|
| Dust weighed per pourDust caught on a filter and weighed while the bag goes into the box. Lower is better. | 0.45 mg | 0.04 mgbetter | 0.41 mg |
| Clumps that survived the drop testShare of clumps still whole after a three-foot drop. Higher is better. | not measured | 94% | only one side measured |
| Granules outside the boxCounted inside the 12-inch ring around the tray. Lower is better. | not measured | 10 granules | 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 | $27.99 | $11.00 |
| Cost per poundBag price divided by what is in the bag. Lower is better. | $0.45better | $0.70 | $0.25 |
| Cost per dayWhat the box costs to keep running each day. Lower is better. | $0.43better | $0.55 | $0.12 |
| Cost across a yearThat daily cost carried over a full year of use. Lower is better. | $157better | $201 | $44 |
Primary tradeoff: Boxiecat Premium's weakest area here is value.
Best dust control here at 0.04mg per pour.
Clumping is a real edge: flat-top easy scoop.
It still lands a stronger overall score than cheaper options because it is more balanced.
Scroll sideways to see every litter. Scores are editorial judgments out of 10.
| Product | ||
|---|---|---|
| Overall Score | 8.7Very good | 9.2Excellent |
| Pricing | ||
| Price | $16.99 | $27.99 |
| Weight | 38 lbs | 40 lbs |
| Cost / Day | $0.43 | $0.55 |
| Performance | ||
| Dust Control | 6 0.45mg per pour | 9 0.04mg per pour |
| Clumping | 8.1 Good | 9.4 Flat-top easy scoop |
| Odor Control | 9.1 7-day heavy fragrance | 8.7 Strong everyday control |
| Tracking Outside the Box | 6 Tracks heavily | 8.2 Low |
| Value for Cost | 9 $0.43/day · $16.99 | 8 $0.55/day · $27.99 |
| Features | ||
| Type | Scented Clumping Clay | Premium Clumping Clay |
| Flushable | ||
| Scented | Yes | No |
| Our Verdict | ||
| Best For | Budget shoppers prioritizing odor control | Lowest-maintenance scooping |
| Read ReviewCheck Price | Read ReviewCheck Price | |
Arm & Hammer Clump & Seal makes the most sense for budget shoppers prioritizing odor control.
You want a budget-friendly clay litter with aggressive odor control and easy store availability, offset by strong fragrance and more tracking.
You need a formula that solves lowest-maintenance scooping better.
Boxiecat Premium makes the most sense for lowest-maintenance scooping.
You want premium convenience and cleaner scooping in a multi-cat box.
You are strictly optimizing for low upfront cost.
The nearest options to this matchup on score and on price.
Weighed 0.15mg per pour and runs at $0.58 a day.
Weighed 0.11mg per pour and runs at $0.63 a day.
Weighed 0.04mg per pour and runs at $0.56 a day.
Boxiecat Premium comes out ahead on the balance of dust, clumping, odor control, tracking and daily cost. Arm & Hammer Clump & Seal is still the one to buy for budget shoppers prioritizing odor control.
Arm & Hammer Clump & Seal runs at $0.43 a day against $0.55 for Boxiecat Premium.
Arm & Hammer Clump & Seal scored higher: 7-day heavy fragrance, against strong everyday control for Boxiecat Premium.
Boxiecat Premium keeps more litter in the box: low, against tracks heavily for 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.
Ultra gives you the hardest clumps and the lightest dust for less money.
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.
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.
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.
Two Arm & Hammer clays built for different things. Clump & Seal is about fragrance and a low bag price.