So Phresh by Petco Extreme Clumping Unscented Grass Seed Cat Litter 10 lbs.
- Cat Litter
- 10 pounds
- Grass Seed
- Cat
- Better rated than 72%
An unscented, grass seed based clumping litter for owners moving away from clay, sold in a 10 pound bag with no dust or tracking data provided to compare against other formulas.
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How it ranks among the 155 cat litter we track
4.6★ across 503 Amazon ratings, Bayesian-smoothed toward the category average.
503 Amazon ratings, weighted on a log scale so huge counts don't drown everything.
300+ bought on Amazon last month.
Brand identity, imagery, description and spec coverage.
The ProductDome score is separate from the Amazon rating shown above: it combines the Bayesian-smoothed Amazon rating with evidence volume, tracked demand, and data quality across the 155 cat litter we track - how the scorecard works · full cat litter data report. Confidence: high - strong rating volume and complete data.Last refreshed Aug 4, 2026. Data-computed, not a hands-on test. Compiled by the ProductDome Research Team.
Overview
So Phresh's Extreme Clumping cat litter is made from grass seed rather than clay, sold unscented in a 10 pound bag. It ranks around 158th among cat litter sellers per the listing's sales rank data, and is marketed by Petco under the So Phresh house brand.
Grass seed litters clump using plant starches instead of bentonite clay, which typically makes for a lighter bag and less mineral dust, though this listing does not include dust or tracking figures to confirm that here. The unscented formula relies on the litter's absorbency rather than fragrance to manage odor, which suits owners who dislike scented litters masking smell instead of controlling it.
- Unscented formula
- Grass seed material
- 10 lb bag capacity
- Ranked in top 200 cat litter sellers
Who it's for
This fits cat owners wanting a plant based clumping litter as an alternative to clay, particularly in households sensitive to scented products. It is less suited to owners who prefer a fragranced litter or who need a very large bag size, since this comes in a 10 pound bag.
Strengths and trade-offs
Drawn from this product's published specifications.
- Grass seed material as a clay alternative
- 10 lb bag is easy to carry and pour
- No dust or tracking data included in the listing
- No clump firmness testing data provided
Performance notes
Clumping performance in grass seed litters comes from the seed's natural starch content binding around moisture, similar in principle to clay clumping but generally lighter in weight per bag. The listing labels this an extreme clumping formula, though it does not include independent data on clump firmness or how quickly it breaks down under multiple uses.
Specifications
| Brand | So |
|---|---|
| Model | 9302 |
| Dimensions & fit | |
| Item Weight | 10 pounds |
| Item Display Weight | 10 pounds |
| Package Size Name | 10 lbs |
| Capacity & performance | |
| Capacity | 10 pounds |
| Construction & materials | |
| Material Type | Grass Seed |
| Included components | |
| Unit Count | 1 |
| Other details | |
| Pet Type | Cat |
| Asin | B077MTTY4P |
| Upc | 800443267691 |
| Manufacturer | So Phresh |
| Best Sellers Rank | #13,731 in Pet Supplies (See Top 100 in Pet Supplies) #158 in Cat Litter |
| Scent Name | Unscented |
| Item Form | Stick |
| Manufacturer Part Number | 9302 |
| Target Species | Cat |
Other So cat litter
How it compares
This product against the closest alternatives we track in cat litter.
| Product | Amazon rating | Ratings | ProductDome score |
|---|---|---|---|
| So Phresh by Petco Extreme Clumping Unscented Grass Seed Cat Litter 10 lbs.This product | 4.6 / 5 | 503 | 4.2 / 5 |
| Fresh Step Advanced Extreme Clump Multi Cat Clumping Litter with Febreze FreshnessFresh | 4.7 / 5 | 20,600 | 4.6 / 5 |
| ARM & HAMMER Clump & Seal SLIDE Platinum Multi-Cat Clumping Cat LitterARM | 4.6 / 5 | 19,800 | 4.6 / 5 |
| PetSafe ScoopFree 4.3 lb BagsPetSafe | 4.5 / 5 | 45,300 | 4.5 / 5 |
| Cat's Pride Premium Lightweight Clumping Litter: Pure & FreshCat's | 4.5 / 5 | 18,600 | 4.5 / 5 |
Similar cat litter from other brands
Questions about the So 9302
Common buyer questions answered straight from the product spec data - no fluff, no "it depends".
What is this cat litter made from?
Grass seed, rather than clay.
Is it scented?
No, it is sold unscented.
What size bag does it come in?
A 10 pound bag.