Whisker Litter-Robot 4 vs PETKIT PuraMax 2
Our call: Whisker Litter-Robot 4 (PetScore 90 vs 84) — but the cost lines below can flip it for your household.
★ Our pick
Whisker · Litter box
Litter-Robot 4
multi-cat households done scooping
90PetScore
No subscription
Sticker$699
Total (3 yr)$1,131
PETKIT · Litter box
PuraMax 2
value self-cleaning pick
84PetScore
No subscription
Sticker$399
Total (3 yr)$759
| Line item | Whisker Litter-Robot 4 | PETKIT PuraMax 2 |
|---|---|---|
| Category | Litter box | Litter box |
| Street price | $699 | $399 |
| Subscription | None | None |
| Consumables | ~$12/mo (any clumping litter + optional liners/filters) | ~$10/mo (liners + any clumping litter) |
| Proprietary refills | No | No |
| Works offline | Yes | No — cloud-dependent |
| Run rate after purchase | $12/mo | $10/mo |
| Year-1 total | $843 | $519 |
| 3-year total | $1,131 | $759 |
| PetScore | 90/100 | 84/100 |
The verdict
Buy the Whisker Litter-Robot 4 if you want the better overall package — it leads the PetScore 90 to 84 and is the stronger fit for multi-cat households done scooping.
Buy the PETKIT PuraMax 2 if its strengths match your household — it's built for value self-cleaning pick. It's also the cheaper one to own: $759 vs $1,131 over three years, a gap of $372 that may settle the question by itself. Either way, the receipts are on each device's true-cost page.