3.9(4,800)Amazon rating$16.892,000+ bought last month
Our verdict
Ultra Clumping Micro Crystals is a dust free, fragrance free crystal litter sold in a compact 5 lb bag, and its 3.9 star average across roughly 4,800 reviews shows a mixed but well-tested track record.
Owners who want a lightweight, dust free crystal litter without added fragrance, and who are comfortable with a slightly lower average rating in exchange for the crystal format.
Skip if
You want a top-rated litter close to 4.5 stars or higher, since this one's 3.9 average trails most of the other options in this batch.
Priced 32% below the category median ($24.99 across 153 tracked models)
Our scorecard
3.9/5overall
Owner rating3.9/5
3.9 average across 4,800 owner ratings
Popularity3.5/5
4,800 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 5 lb bag uses micro crystal litter instead of clay, marketed as Dust Free, Soft on Paws, and Fragrance Free, positioning it for cats and owners sensitive to both dust and scent.', "Crystal litters like this one typically work by absorbing moisture rather than clumping the same way clay does, though the listing does call out 'Clumping' in its name, so it's marketed as combining crystal absorption with clumping behavior.", "At $16.89 for 5 lbs, it's priced above the bulk clay jugs in this comparison on a per-pound basis, and its 3.9 star average across a large base of roughly 4,800 reviews is the lowest rating in this group, worth weighing against the other Tidy Cats and Arm & Hammer options here."]
Pros
Dust free formula, useful for owners or cats sensitive to airborne litter dust
Fragrance free, no added scent
Soft on paws texture claim from the micro crystal form
Large review base of roughly 4,800 gives a well-tested sample size
Cons
3.9 star average is the lowest rating among the litters in this comparison
Smaller 5 lb bag size compared to the 14 to 20 lb bags elsewhere in this group
Higher price per pound than the bulk clay options
Performance notes
As a micro crystal litter rather than clay, this formula is built around dust free handling and a paw-friendly texture, with no added fragrance. The lower 3.9 star average relative to the clay and pellet options in this batch suggests more mixed feedback, even with a large review sample of about 4,800.
What buyers say
With roughly 4,800 reviews and a 3.9 star average, plus about 2,000 bought in the past month, this is a high-volume seller, but the rating is more mixed than the other litters in this comparison, most of which sit at 4.4 stars or higher.
No, it's labeled Fragrance Free, so there's no added perfume scent.
Does this litter create a lot of dust?
It's marketed as Dust Free, one of its main selling points compared to standard clay litter.
How does the rating compare to clay litters in this lineup?
At 3.9 stars, it rates a bit lower than the clay and pellet based Tidy Cats and Arm & Hammer litters in this comparison, most of which average 4.4 stars or above.
We use necessary cookies to keep the site working. With your permission, we also use functional, analytics, and marketing cookies. Read our Cookie Policy.
