PetSafe
PetSafe ScoopFree Crystal Smart
$269.99Cheaper
Released 2020
Best Self Cleaning Litter Boxes · head-to-head
PetSafe ScoopFree Crystal Smart vs PETKIT PuraMax 2
A sourced, side-by-side comparison. PetSafe ScoopFree Crystal Smart is cheaper at $269.99. Every spec and price links to its source.
PETKIT
PETKIT PuraMax 2
$369.99
Released 2024
Which is better: the PetSafe ScoopFree Crystal Smart or PETKIT PuraMax 2?
On the specs we track, they're closely matched. The PetSafe ScoopFree Crystal Smart is the cheaper at $269.99.
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Full spec sheet
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec | PetSafe ScoopFree Crystal Smart | PETKIT PuraMax 2 |
|---|---|---|
| US price | $269.99 | $369.99 |
| Brand | PetSafe | PETKIT |
| Released | 2020 | 2024 |
| Mechanism | raking | rotating |
| Capacity cats | — | — |
| Waste drawer capacity | — | 7 L |
| App connectivity | Yes | Yes |
| Weight sensor | No | Yes |
| Litter type | crystal | clumping |
| Dimensions (in) | 27.6 x 19.1 x 15.6 in | 24.41 x 21.18 x 21.73 in |
| Release | 2020 | 2024 |
Sources — PetSafe ScoopFree Crystal Smart: petsafe.com (verified 2026-06-19). PETKIT PuraMax 2: petkit.com (verified 2026-06-19).
What's the difference between the PetSafe ScoopFree Crystal Smart and PETKIT PuraMax 2?
Where the two actually differ on the specs we track (4 of 7). Matching specs are omitted.
- Mechanism: PetSafe ScoopFree Crystal Smart raking vs PETKIT PuraMax 2 rotating
- Weight sensor: PetSafe ScoopFree Crystal Smart false vs PETKIT PuraMax 2 true
- Litter type: PetSafe ScoopFree Crystal Smart crystal vs PETKIT PuraMax 2 clumping
- Dimensions (in): PetSafe ScoopFree Crystal Smart 27.6 x 19.1 x 15.6 in vs PETKIT PuraMax 2 24.41 x 21.18 x 21.73 in
What reviewers say
Sourced tester consensus for each — the "what people who used it think" layer, not just specs.
PetSafe ScoopFree Crystal Smart
No sourced tester review yet.
PETKIT PuraMax 2
Only one testing outlet (Cats.com) has reviewed the PetKit Pura Max 2 so far, and its verdict is mixed. The reviewer credits it for odor elimination, safety, and its leak-proof liner, but reports that it emptied waste more poorly and slowly than any other automatic litter box tested, and found it hard to deep clean given its price. (1 sourced review, 1 lab-tested.)
Praised: Effective odor elimination; Safety features, including an entrance that stays open for the cat; Leak-proof liner design.
Flagged: Emptying performance was worse and slower than other automatic litter boxes tested; Difficult to deep clean for the price.