Pine (Soft Granules)
Catalyst Soft Wood
A soft, sand-like pine litter that avoids the pellet feel many cats reject while keeping dust and smell manageable.
Overall score
8.7/10
Cost per day
$0.72
Reviewed Nov 20, 2025
Head-to-head comparison
Catalyst Soft Wood vs Naturally Fresh Walnut: Which Should You Buy?
Naturally Fresh clumps harder and costs less to run. Catalyst wins on texture alone, for cats that reject anything grainy or pelleted. If your cat is not fussy about what it stands on, this is not a close call.
ReviewCatLitter editorial teamUpdated Nov 20, 2025
This comparison page is maintained by the ReviewCatLitter editorial team and grounded in the same scoring framework used across the published review catalog.
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
Overall winner
Naturally Fresh Walnut
Naturally Fresh Walnut is the strongest all-around pick in this comparison for natural clumping without corn.
Lowest daily cost
Naturally Fresh Walnut at $0.54/day
Budget is often the deciding factor in this tier.
Best odor control
Naturally Fresh Walnut at Strong natural absorption
Odor control often decides whether a litter feels tolerable long term.
Tracks less outside the box
Catalyst Soft Wood 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 | Catalyst Soft Wood | Naturally Fresh Walnut | Gap |
|---|---|---|---|
| Dust weighed per pourParticulates caught in the air while the bag goes into the box. Lower is better. | 0.15 mg | 0.13 mgbetter | 0.02 mg |
| Clumps that survived the drop testShare of clumps still whole after a three-foot drop. Higher is better. | 73% | 89%better | 16 points |
| Bag priceWhat the tested bag cost. Bag sizes differ, so read it next to cost per pound. | $27.99 | $24.99 | $3.00 |
| Cost per poundBag price divided by what is in the bag. Lower is better. | $1.56 | $0.96better | $0.60 |
| Cost per dayWhat the box costs to keep running each day. Lower is better. | $0.72 | $0.54better | $0.18 |
| Cost across a yearThat daily cost carried over a full year of use. Lower is better. | $263 | $197better | $66 |
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 Naturally Fresh Walnut wins this matchup
Primary tradeoff: Naturally Fresh Walnut's weakest area here is tracking.
Strongest odor control in this set with strong natural absorption.
It is also the cheapest daily option at $0.54 per day.
| Product | ||
|---|---|---|
| Overall Score | 8.7 | 8.8 |
| Pricing | ||
| Price | $27.99 | $24.99 |
| Weight | 18 lbs | 26 lbs |
| Cost / Day | $0.72 | $0.54 |
| Performance | ||
| Dust Control | 8.3 0.15mg per pour | 8.1 0.13mg per pour |
| Clumping | 7.7 Good for wood litter | 8.9 Hard for natural litter |
| Odor Control | 8.1 Fresh wood scent helps | 8.4 Strong natural absorption |
| Tracking Outside the Box | 8.3 Low | 7.4 Moderate |
| Value for Cost | 7 $0.72/day · $27.99 | 8.1 $0.54/day · $24.99 |
| Features | ||
| Type | Soft Wood / Pine | Walnut Shell |
| Flushable | ||
| Scented | No | No |
| Our Verdict | ||
| Best For | Cats that reject pellets | Natural clumping without corn |
| Read ReviewCheck Price | Read ReviewCheck Price | |
Best fit
Catalyst Soft Wood
Catalyst Soft Wood makes the most sense for cats that reject pellets.
Worth it if
You want a soft, sand-like pine litter that avoids the pellet feel many cats reject while keeping dust and smell manageable.
Skip it if
You need a formula that solves natural clumping without corn better.
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 natural clumping without corn better.
If neither option is quite right
The closest litters we have tested to this matchup, on score and on price.
Silica Crystal
PrettyLitter
Runs at $0.80 a day. Its dust was never weighed.
Best for health monitoring and lightweight convenience
Clumping Clay
Dr. Elsey's Ultra
Weighed 0.03mg per pour and runs at $0.51 a day.
Best for dust-sensitive homes
Premium Clumping Clay
Boxiecat Premium
Weighed 0.04mg per pour and runs at $0.55 a day.
Best for lowest-maintenance scooping
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 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
Catalyst Soft Wood vs Dr. Elsey's Ultra
Ultra is the better litter on every reading we took here. Catalyst exists for the cat that refuses clay outright.
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
Naturally Fresh Walnut vs Sustainably Yours
Naturally Fresh is the cheaper natural bag and clumps nearly as hard. Sustainably Yours flushes and tracks less.
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
Naturally Fresh Walnut vs World's Best Cat Litter
Corn against walnut. World's Best flushes and barely leaves the tray. Naturally Fresh held more clumps together in our drop test and costs less per day.
Winner: Naturally Fresh Walnut
Quick Answers
Which is better: Catalyst Soft Wood or Naturally Fresh Walnut?
Naturally Fresh Walnut comes out ahead on the balance of dust, clumping, odor control, tracking and daily cost. Catalyst Soft Wood is still the one to buy for cats that reject pellets.
Which is cheaper per day: Catalyst Soft Wood or Naturally Fresh Walnut?
Naturally Fresh Walnut runs at $0.54 a day against $0.72 for Catalyst Soft Wood.
Which controls smell better: Catalyst Soft Wood or Naturally Fresh Walnut?
Naturally Fresh Walnut scored higher: strong natural absorption, against fresh wood scent helps for Catalyst Soft Wood.
Which tracks less outside the litter box: Catalyst Soft Wood or Naturally Fresh Walnut?
Catalyst Soft Wood keeps more litter in the box: low, against moderate for Naturally Fresh Walnut.