SmartCat All Natural Clumping Cat Litter, 20 Pound (320oz 1 pack) - Alternative to Clay and Pellet Litter - Chemical and 99% Dust Free - Unscented and Lightweight Review
By Marcus Bell · Dog nutrition editor · Published 2026-05-18 · Updated 2026-06-29
4.3(5,300)Amazon rating$29.996,000+ bought last month
Our verdict
SmartCat's all-natural grass seed litter clumps like clay while staying chemical-free and 99% dust-free, and at $29.99 for 20 lbs it's priced as a premium alternative, backed by a 4.3 star average across 5,300 reviews.
Owners who want a natural, non-clay clumping litter made from grass seed and are willing to pay more for a chemical-free, low-dust formula.
Skip if
You're looking for the cheapest option per pound, since this is priced higher than most clay and corn litters in this category.
Form Granule
Weight 20 Pounds
Priced 20% above the category median ($24.99 across 153 tracked models)
Our scorecard
4.3/5overall
Owner rating4.3/5
4.3 average across 5,300 owner ratings
Popularity3.6/5
5,300 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
["SmartCat positions this litter as a natural alternative to both clay and pellet formulas, using grass seed as its base material while still clumping for scooping. It's marketed as chemical-free, unscented, and 99% dust-free, aimed at owners wanting a gentler formula without giving up clumping convenience.", "At $29.99 for a 20 lb bag, it's one of the pricier options in this roundup, reflecting its position as a specialty natural litter rather than a budget clay formula. The lightweight grass seed base is also easier to carry and pour than traditional clay, which can offset some of the higher upfront cost through easier handling.", 'With 5,300 reviews and a 4.3 star average, plus about 6,000 units bought in the past month, it has solid demand for a premium natural litter, suggesting buyers are generally satisfied with the trade-off between price and the chemical-free, low-dust formula.']
Pros
Chemical-free, all-natural grass seed formula
Clumps for scooping like clay while remaining lightweight
99% dust-free claim suits sensitive households
Solid 4.3 star average across 5,300 reviews
Cons
Priced higher at $29.99 per 20 lbs than most clay and corn litters here
Unscented only, no fragranced version available
Grass seed texture may take some cats time to adjust to versus clay
Specifications
Form
Granule
Weight
20 Pounds
Performance notes
Built from grass seed rather than clay or pine, this litter is designed to clump on contact with moisture while staying lightweight and low-dust, giving it a scooping routine similar to clay without the added weight or chemical additives.
What buyers say
A 4.3 star average from 5,300 reviews and about 6,000 units bought last month show steady demand for this natural, higher-priced clumping option.
It's made from grass seed rather than clay or pine, positioned by SmartCat as a natural, chemical-free alternative that still clumps for scooping.
Is it worth the higher price?
At $29.99 for 20 lbs it costs more than most clay and corn litters here, but the lightweight, chemical-free, low-dust formula may justify the cost for owners prioritizing those features.
Does it produce a lot of dust?
SmartCat claims it's 99% dust-free, which can be a meaningful difference for households with dust sensitivities or asthma concerns around cats.
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