Arm & Hammer's Clump & Seal Platinum uses baking soda and a rock-hard clumping formula to fight odor in multi-cat homes, and a 4.6 star average across 6,300 reviews makes it one of the best reviewed litters in this batch.
Multi-cat households that need strong, long lasting odor control and don't mind a heavier clumping clay litter.
Skip if
You want a lighter weight or plant based litter, since this is a traditional heavier clumping clay formula.
Form Granule
Weight 36 Pounds
Priced 44% above the category median ($24.99 across 153 tracked models)
Our scorecard
4.6/5overall
Owner rating4.6/5
4.6 average across 6,300 owner ratings
Popularity3.7/5
6,300 owner reviews, more than most models here
The overall score is owner satisfaction weighted by how many reviews back it, so a high rating from few reviews counts for less. The bars below show where this model stands against the other dog and cat food, health, gear and grooming we track in this category on price, popularity and size. Context, not marks against it, and our read of the data, not a lab test.
Overview
["This clumping cat litter is built around Arm & Hammer's baking soda technology, aimed at sealing away odor for up to 14 days even in homes with multiple cats. It's designed to form what the brand calls rock-hard clumps, meant to hold together for easy scooping without crumbling.", 'Sold as two 18 lb bags for a combined 36 lbs, this is a heavier duty option meant for households that go through litter quickly. The Fresh Scent version adds a layer of fragrance on top of the baking soda odor control.', "At $35.98 for 36 lbs total, it's competitively priced by weight for a name brand clumping litter. With 6,300 reviews and a 4.6 star average, it carries one of the strongest review profiles in this group, the highest rating of the eight litters covered here."]
Pros
Baking soda formula targets 14 day odor control
Rock-hard clumping designed to hold together for easy scooping
Large 36 lb combined bag size suited to multi-cat homes
Highest rated litter in this batch at 4.6 stars
Backed by a large review base of 6,300
Cons
36 lbs total is heavy to carry and store compared to lighter formulas
Fresh Scent fragrance may be more than some cats or owners prefer
Specifications
Form
Granule
Weight
36 Pounds
Performance notes
The rock-hard clump claim points to a denser, firmer clumping clay than some lighter alternatives, which typically means less crumbling in the box and cleaner scooping, though it also adds weight compared to plant based or lightweight mineral litters. The baking soda based odor sealing is Arm & Hammer's signature approach, layering chemical odor neutralization on top of physical clumping.
What buyers say
A 4.6 star average across 6,300 reviews is the strongest combination of rating and review volume in this batch, pointing to a large base of satisfied, repeat Arm & Hammer customers.
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