Walnut Shell (Natural)
Naturally Fresh Walnut
A walnut-shell litter that clumps harder than many natural competitors and absorbs odor naturally without added fragrance.
Overall score
8.8/10
Cost per day
$0.54
Reviewed Nov 18, 2025
Head-to-head comparison
Naturally Fresh Walnut vs Sustainably Yours: Which Should You Buy?
Naturally Fresh is the cheaper natural bag and clumps nearly as hard. Sustainably Yours flushes and tracks less. Its pale granules also make a color change in the tray easy to spot, so pay the difference for the flushing and the visibility, not for the clumps.
ReviewCatLitter editorial teamUpdated Mar 6, 2026
This comparison page is maintained by the ReviewCatLitter editorial team and grounded in the same scoring framework used across the published review catalog.
Natural (Corn + Cassava)
Sustainably Yours
A premium natural litter with harder clumping than most plant-based options and bright white granules for easy health monitoring.
Overall score
9.3/10
Cost per day
$0.63
Reviewed Mar 6, 2026
Overall winner
Sustainably Yours
Sustainably Yours is the strongest all-around pick in this comparison for best-performing natural litter shoppers.
Lowest daily cost
Naturally Fresh Walnut at $0.54/day
Budget is often the deciding factor in this tier.
Best odor control
Sustainably Yours at Better than standard corn
Odor control often decides whether a litter feels tolerable long term.
Tracks less outside the box
Sustainably Yours at Low
Tracking can be more important than overall score in small spaces.
What we actually measured
Every figure below is a reading from our own test runs, not a rating. Where a run never took a reading it says so.
| Reading | Naturally Fresh Walnut | Sustainably Yours | Gap |
|---|---|---|---|
| Dust weighed per pourParticulates caught in the air while the bag goes into the box. Lower is better. | 0.13 mg | 0.11 mgbetter | 0.02 mg |
| Clumps that survived the drop testShare of clumps still whole after a three-foot drop. Higher is better. | 89% | not measured | only one side measured |
| Bag priceWhat the tested bag cost. Bag sizes differ, so read it next to cost per pound. | $24.99 | $29.99 | $5.00 |
| Cost per poundBag price divided by what is in the bag. Lower is better. | $0.96better | $1.15 | $0.19 |
| Cost per dayWhat the box costs to keep running each day. Lower is better. | $0.54better | $0.63 | $0.09 |
| Cost across a yearThat daily cost carried over a full year of use. Lower is better. | $197better | $230 | $33 |
Neither run recorded granules outside the box, ammonia after one day and ammonia after three days, so those rows are left out rather than filled in from a similar bag. The full test data shows every reading we have.
Why Sustainably Yours wins this matchup
Primary tradeoff: Sustainably Yours's weakest area here is value.
Best dust control here at 0.11mg per pour.
Strongest odor control in this set with better than standard corn.
Clumping is a real edge: excellent for natural litter.
| Product | ||
|---|---|---|
| Overall Score | 8.8 | 9.3 |
| Pricing | ||
| Price | $24.99 | $29.99 |
| Weight | 26 lbs | 26 lbs |
| Cost / Day | $0.54 | $0.63 |
| Performance | ||
| Dust Control | 8.1 0.13mg per pour | 8.8 0.11mg per pour |
| Clumping | 8.9 Hard for natural litter | 9.3 Excellent for natural litter |
| Odor Control | 8.4 Strong natural absorption | 8.6 Better than standard corn |
| Tracking Outside the Box | 7.4 Moderate | 8.4 Low |
| Value for Cost | 8.1 $0.54/day · $24.99 | 7.8 $0.63/day · $29.99 |
| Features | ||
| Type | Walnut Shell | Natural Corn + Cassava |
| Flushable | ||
| Scented | No | No |
| Our Verdict | ||
| Best For | Natural clumping without corn | Best-performing natural litter shoppers |
| Read ReviewCheck Price | Read ReviewCheck Price | |
Best fit
Naturally Fresh Walnut
Naturally Fresh Walnut makes the most sense for natural clumping without corn.
Worth it if
You want a walnut-shell litter that clumps harder than many natural competitors and absorbs odor naturally without added fragrance.
Skip it if
You need a formula that solves best-performing natural litter shoppers better.
Best fit
Sustainably Yours
Sustainably Yours makes the most sense for best-performing natural litter shoppers.
Worth it if
You want a premium natural litter with harder clumping than most plant-based options and bright white granules for easy health monitoring.
Skip it if
You need a formula that solves best-performing natural litter shoppers better.
If neither option is quite right
The closest litters we have tested to this matchup, on score and on price.
Corn Litter
World's Best Cat Litter
Weighed 0.15mg per pour and runs at $0.58 a day.
Best for eco-conscious owners who want flushable litter
Premium Clumping Clay
Boxiecat Premium
Weighed 0.04mg per pour and runs at $0.55 a day.
Best for lowest-maintenance scooping
Clumping Clay
Dr. Elsey's Cat Attract
Weighed 0.04mg per pour and runs at $0.56 a day.
Best for cats avoiding the litter box
Read the full reviews
Use this page to choose a winner quickly, then open the full product reviews if you want the long-form test notes.
Keep comparing nearby options
Related matchups that share one of the same products and answer the next likely decision.
Related matchup
Dr. Elsey's Ultra vs Sustainably Yours
Ultra clumps harder and costs less per day. Sustainably Yours flushes, weighs far less to carry home, and keeps more litter inside the box.
Winner: Dr. Elsey's Ultra
Related matchup
Dr. Elsey's Ultra vs Naturally Fresh Walnut
Ultra holds its clumps better and pours less dust. Naturally Fresh is the plant litter that gets closest to it, for a little more per day.
Winner: Dr. Elsey's Ultra
Related matchup
Arm & Hammer Clump & Seal vs Naturally Fresh Walnut
Naturally Fresh is the way out of fragrance and heavy dust without paying premium clay money.
Winner: Naturally Fresh Walnut
Related matchup
World's Best Cat Litter vs Sustainably Yours
World's Best is the corn litter most people start with. Sustainably Yours is the one that clumps harder and keeps more litter inside the tray.
Winner: Sustainably Yours
Related matchup
Catalyst Soft Wood vs Sustainably Yours
Sustainably Yours suits a cat that wants a sand-like litter it can dig. Catalyst suits a cat that wants wood without pellets underfoot.
Winner: Sustainably Yours
Related matchup
Sustainably Yours vs Tuft + Paw
Both are premium plant litters and both flush. Tuft + Paw is far lighter on dust and leaves almost nothing on the floor.
Winner: Sustainably Yours
Quick Answers
Which is better: Naturally Fresh Walnut or Sustainably Yours?
Sustainably Yours comes out ahead on the balance of dust, clumping, odor control, tracking and daily cost. Naturally Fresh Walnut is still the one to buy for natural clumping without corn.
Which is cheaper per day: Naturally Fresh Walnut or Sustainably Yours?
Naturally Fresh Walnut runs at $0.54 a day against $0.63 for Sustainably Yours.
Which controls smell better: Naturally Fresh Walnut or Sustainably Yours?
Sustainably Yours scored higher: better than standard corn, against strong natural absorption for Naturally Fresh Walnut.
Which tracks less outside the litter box: Naturally Fresh Walnut or Sustainably Yours?
Sustainably Yours keeps more litter in the box: low, against moderate for Naturally Fresh Walnut.