Sustainably Yours is the strongest all-around pick in this comparison for best-performing natural litter shoppers.
A soft, sand-like pine litter that avoids the pellet feel many cats reject while keeping dust and smell manageable.
A premium natural litter with harder clumping than most plant-based options and bright white granules for easy health monitoring.
Sustainably Yours suits a cat that wants a sand-like litter it can dig. Catalyst suits a cat that wants wood without pellets underfoot. Catalyst is the pricier daily habit and its clumps hold together less well.
This comparison page is maintained by the ReviewCatLitter editorial team and grounded in the same scoring framework used across the published review catalog.
Choose between them on texture, clumping, dust and price. Then, if the room still tells you where the box is, Purrify is activated carbon you mix into whichever bag you chose. It is what we use in our own homes.
Read our Purrify guide to picking a litter for odor control.
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 | Sustainably Yours | Gap |
|---|---|---|---|
| Dust weighed per pourDust caught on a filter and weighed while the bag goes into the box. Lower is better. | 0.15 mg | 0.11 mgbetter | 0.04 mg |
| Clumps that survived the drop testShare of clumps still whole after a three-foot drop. Higher is better. | 73% | not measured | only one side measured |
| Bag priceWhat the tested bag cost. Bag sizes differ, so read it next to cost per pound. | $27.99 | $29.99 | $2.00 |
| Cost per poundBag price divided by what is in the bag. Lower is better. | $1.56 | $1.15better | $0.41 |
| Cost per dayWhat the box costs to keep running each day. Lower is better. | $0.72 | $0.63better | $0.09 |
| Cost across a yearThat daily cost carried over a full year of use. Lower is better. | $263 | $230better | $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.
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.
Scroll sideways to see every litter. Scores are editorial judgments out of 10.
| Product | ||
|---|---|---|
| Overall Score | 8.7Very good | 9.3Excellent |
| Pricing | ||
| Price | $27.99 | $29.99 |
| Weight | 18 lbs | 26 lbs |
| Cost / Day | $0.72 | $0.63 |
| Performance | ||
| Dust Control | 8.3 0.15mg per pour | 8.8 0.11mg per pour |
| Clumping | 7.7 Good for wood litter | 9.3 Excellent for natural litter |
| Odor Control | 8.1 Fresh wood scent helps | 8.6 Better than standard corn |
| Tracking Outside the Box | 8.3 Low | 8.4 Low |
| Value for Cost | 7 $0.72/day · $27.99 | 7.8 $0.63/day · $29.99 |
| Features | ||
| Type | Soft Wood / Pine | Natural Corn + Cassava |
| Flushable | ||
| Scented | No | No |
| Our Verdict | ||
| Best For | Cats that reject pellets | Best-performing natural litter shoppers |
| Read ReviewCheck Price | Read ReviewCheck Price | |
Catalyst Soft Wood makes the most sense for cats that reject pellets.
You want a soft, sand-like pine litter that avoids the pellet feel many cats reject while keeping dust and smell manageable.
You need a formula that solves best-performing natural litter shoppers better.
Sustainably Yours makes the most sense for best-performing natural litter shoppers.
You want a premium natural litter with harder clumping than most plant-based options and bright white granules for easy health monitoring.
You need a formula that solves best-performing natural litter shoppers better.
The nearest options to this matchup on score and on price.
Weighed 0.15mg per pour and runs at $0.58 a day.
Weighed 0.04mg per pour and runs at $0.55 a day.
Weighed 0.04mg per pour and runs at $0.56 a day.
Sustainably Yours 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.
Sustainably Yours runs at $0.63 a day against $0.72 for Catalyst Soft Wood.
Sustainably Yours scored higher: better than standard corn, against fresh wood scent helps for Catalyst Soft Wood.
Sustainably Yours keeps more litter in the box: low, against low for Catalyst Soft Wood.
Ultra clumps harder and costs less per day. Sustainably Yours flushes, weighs far less to carry home, and keeps more litter inside the box.
Ultra is the better litter on every reading we took here. Catalyst exists for the cat that refuses clay outright.
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.
Naturally Fresh is the cheaper natural bag and clumps nearly as hard. Sustainably Yours flushes and tracks less.
Both are premium plant litters and both flush. Tuft + Paw is far lighter on dust and leaves almost nothing on the floor.
World's Best is the safer everyday natural pick. Catalyst is for the cat that refuses anything that feels like clay or pellets.