Clumping Clay
Boxiecat Premium
Flat Top clumping tech keeps litter on the surface, making scooping cleaner and easier than typical premium clay formulas.
Overall score
9.2/10
Cost per day
$0.55
Reviewed Mar 1, 2026
Head-to-head comparison
Boxiecat Premium vs Sustainably Yours: Which Should You Buy?
Boxiecat is the easiest scoop in clay. Sustainably Yours is a flushable plant litter that clumps almost as well for a little more each day. Choose on whether you want the waste out of the bin or the scoop over faster.
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
Boxiecat Premium
Boxiecat Premium is the strongest all-around pick in this comparison for lowest-maintenance scooping.
Lowest daily cost
Boxiecat Premium at $0.55/day
Budget is often the deciding factor in this tier.
Best odor control
Boxiecat Premium at Strong everyday control
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 | Boxiecat Premium | Sustainably Yours | Gap |
|---|---|---|---|
| Dust weighed per pourParticulates caught in the air while the bag goes into the box. Lower is better. | 0.04 mgbetter | 0.11 mg | 0.07 mg |
| Clumps that survived the drop testShare of clumps still whole after a three-foot drop. Higher is better. | 94% | not measured | only one side measured |
| Granules outside the boxCounted inside the 12-inch ring around the tray. Lower is better. | 10 granules | 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. | $0.70better | $1.15 | $0.45 |
| Cost per dayWhat the box costs to keep running each day. Lower is better. | $0.55better | $0.63 | $0.08 |
| Cost across a yearThat daily cost carried over a full year of use. Lower is better. | $201better | $230 | $29 |
Neither run recorded 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 Boxiecat Premium wins this matchup
Primary tradeoff: Boxiecat Premium's weakest area here is value.
Best dust control here at 0.04mg per pour.
Strongest odor control in this set with strong everyday control.
Clumping is a real edge: flat-top easy scoop.
| Product | ||
|---|---|---|
| Overall Score | 9.2 | 9.3 |
| Pricing | ||
| Price | $27.99 | $29.99 |
| Weight | 40 lbs | 26 lbs |
| Cost / Day | $0.55 | $0.63 |
| Performance | ||
| Dust Control | 9 0.04mg per pour | 8.8 0.11mg per pour |
| Clumping | 9.4 Flat-top easy scoop | 9.3 Excellent for natural litter |
| Odor Control | 8.7 Strong everyday control | 8.6 Better than standard corn |
| Tracking Outside the Box | 8.2 Low | 8.4 Low |
| Value for Cost | 8 $0.55/day · $27.99 | 7.8 $0.63/day · $29.99 |
| Features | ||
| Type | Premium Clumping Clay | Natural Corn + Cassava |
| Flushable | ||
| Scented | No | No |
| Our Verdict | ||
| Best For | Lowest-maintenance scooping | Best-performing natural litter shoppers |
| Read ReviewCheck Price | Read ReviewCheck Price | |
Best fit
Boxiecat Premium
Boxiecat Premium makes the most sense for lowest-maintenance scooping.
Worth it if
You want premium convenience and cleaner scooping in a multi-cat box.
Skip it if
You are strictly optimizing for low upfront cost.
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 lowest-maintenance scooping 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
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
Soft Wood / Pine
Catalyst Soft Wood
Weighed 0.15mg per pour and runs at $0.72 a day.
Best for cats that reject pellets
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 Boxiecat Premium
Ultra gives you the hardest clumps and the lightest dust for less money.
Winner: Dr. Elsey's Ultra
Related matchup
Arm & Hammer Clump & Seal vs Boxiecat Premium
Boxiecat is the quiet, unscented, easy-scoop bag. Clump & Seal is the cheap, heavily perfumed one.
Winner: Boxiecat Premium
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
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
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
Quick Answers
Which is better: Boxiecat Premium or Sustainably Yours?
Boxiecat Premium comes out ahead on the balance of dust, clumping, odor control, tracking and daily cost. Sustainably Yours is still the one to buy for best-performing natural litter shoppers.
Which is cheaper per day: Boxiecat Premium or Sustainably Yours?
Boxiecat Premium runs at $0.55 a day against $0.63 for Sustainably Yours.
Which controls smell better: Boxiecat Premium or Sustainably Yours?
Boxiecat Premium scored higher: strong everyday control, against better than standard corn for Sustainably Yours.
Which tracks less outside the litter box: Boxiecat Premium or Sustainably Yours?
Sustainably Yours keeps more litter in the box: low, against low for Boxiecat Premium.