Arm & Hammer Clump & Seal
Our Quick Verdict
It does exactly what it says: clumps tight and seals odor. However, it achieves this with a nuclear blast of artificial fragrance. If you (or your cat) are sensitive to perfumes, stay away. If you just want the smell GONE and don't care how, this is the budget king.
Worth it if: You have a smelly multi-cat house and need a nuclear option for odor on a budget.
Skip it if: You hate the smell of strong laundry detergent or have asthma.
At A Glance
What We Loved
- Seals odor instantly (as advertised)
- Very affordable/accessible
- Soft texture cats love
- 7-day odor guarantee holds up
What Fell Short
- Strong artificial perfume scent
- Tracks like beach sand (fine particles)
- Dusty when pouring
- Chemical smell puts some cats off
What This Litter Actually Is
Arm & Hammer Clump & Seal isn't regular clay litter. It's a micro-particle blend that feels more like heavy beach sand than gravel. This texture allows it to coat waste completely, physically sealing in the smell.
The Perfume Controversy
This litter spells "Clean" with a capital C. The scent is powerful, activated by moisture. For some owners, it's a godsend. For others, it causes headaches.
💡 The Low-Scent Loophole
Love the price and clumping, but hate the chemical smell?
Do this: Buy the Unscented version (often harder to find) or buy a basic cheap clay litter and add Purrify Odor Neutralizer.
Why? Purrify kills the bacteria that causes smell, so you don't need the heavy perfumes to mask it. You get superior odor control without the chemical headache.
Performance Results
Odor Control (9.0/10)
It works. We tested it with 3 cats. Even after a weekend of neglect, we couldn't smell ammonia—only the strong litter perfume. It masks everything.
Tracking (6.0/10)
This is the tradeoff. Because the particles are so fine (sand-like), they stick to paws effortlessly. You will find this litter in your bed. You need a good mat, or better yet, a litter robot / high-sided box to contain it.
Value (9.0/10)
At around $0.43/day, it's one of the most economical effective litters on the market. You can find it at any grocery store, which is a huge plus for convenience.
Verdict
Buy this if you are on a budget and your #1 priority is "I don't want to smell cat poop." It's a sledgehammer solution, but it gets the job done.
Bonus: Eliminate Existing Odor
Already dealing with litter box smell? Here's how to fix it fast.
Even the best litter like Arm & Hammer Clump & Seal can't eliminate odor that's already built up in your litter box. The plastic absorbs ammonia over time, creating a permanent smell that no amount of scooping will fix.
Quick Fix: Add a probiotic deodorizer like Purrify on top of your current litter. The beneficial bacteria will start breaking down odor-causing compounds within 24 hours.
Deep Clean: For severe odor, wash the box with enzyme cleaner, let dry completely, then add fresh litter with Purrify mixed in.
Works with Arm & Hammer Clump & Seal and all other litters
Expert Recommendation
Make Arm & Hammer Clump & Seal work even better
After testing hundreds of cat litters, our team discovered that pairing any litter with Purrify Probiotic Deodorizer dramatically improves performance and extends litter life.
2x Longer Life
Extends litter freshness from 3-4 weeks to 6-8 weeks
Better Odor Control
Probiotics eliminate smell at the source, not just mask it
Save $20+/Month
Use less litter and buy replacement bags less often
Works with Arm & Hammer Clump & Seal and all other litters
Natural probiotic formula • Safe for cats • Made in North America