PetSafe ScoopFree Crystal Plus vs PETKIT Purobot Crystal Duo
Only the PETKIT Purobot Crystal Duo publishes a minimum detection weight (3.3 lb); PetSafe does not for the PetSafe ScoopFree Crystal Plus. Every other published figure for both is in the table, with the rows where they differ tinted.
PetSafe
PetSafe ScoopFree Crystal Plus
~$200
The current open-tray ScoopFree adds a light that tells you when the crystal tray is spent.
Best for: A single cat in a small home where no drawer ever gets emptied
No drawer: the disposable tray is the unit you replace. The maker rates a tray for up to 30 days with one cat.
PETKIT
PETKIT Purobot Crystal Duo
~$200
This is PETKIT's answer to the ScoopFree: an open crystal tray, but with a camera that watches urination patterns and a 7-inch entry sill.
Best for: Single-cat owners who want a camera on a crystal-tray box
No drawer: the disposable tray is the unit you replace. The maker rates a tray for up to 30 days with one cat.
| Specification | PetSafe ScoopFree Crystal Plus | PETKIT Purobot Crystal Duo |
|---|---|---|
| Approx. price | ~$200 | ~$200 |
| Type | Crystal tray | Crystal tray |
| Kitten gate | Automate from 6 months (no weight published) | Automate from ~3.3 lb / ~6 months |
| Min. detection weight | not published | 3.3 lb |
| Maker's minimum age | 6 months | 6 months |
| Big-cat fit | No weight limit published | No weight limit published |
| Entry step | not published | 7.08 in off the floor |
| Footprint | 20.4 × 28.2 in × 6.6 in tall | 32.2 × 19.96 in × 13.14 in tall |
| Tray life | Up to 30 days, one cat | Up to 30 days, one cat |
| Litter system | Disposable crystal tray | Disposable crystal tray |
| Litters listed | silica crystal | silica crystal |
| Litters to avoid | clumping clay, non-clumping | clumping clay, tofu, mixed, non-clumping |
| Weight sensor | No | Not published |
| Anti-pinch protection | Not stated by the maker | Not stated by the maker |
| Infrared / radar | Not published | Not published |
| Camera | No | Yes |
| Wi-Fi app | No | Yes |
| Running cost | ~$23/month for one cat, at the longest life the maker states | ~$20/month for one cat, at the longest life the maker states |
| Required consumable | ScoopFree disposable crystal litter tray (or PetSafe's reusable tray refilled with its crystal litter) | PETKIT Crystal Litter Set (crystal litter and disposable tray) |
| Bags / liners | None — the tray is lidded and thrown away | None — the tray is thrown away |
| Warranty | 1 year | 2 years |
| First listed | 2024 | 2025 |
PetSafe ScoopFree Crystal Plus: what it gives up
- Needs a PetSafe tray roughly every month per cat, about $23 each
- Tray life halves with a second cat and drops to a week or so with three
- Ordinary clumping clay cannot be used
- PetSafe publishes no cat-weight limits
- No app
PETKIT Purobot Crystal Duo: what it gives up
- Only PETKIT's own crystal sets fit
- Monthly set cost exceeds the purchase price within a year
- PETKIT states no maximum weight, only that large breeds are suitable
- Designed around one cat; no individual cat recognition
Full pages: PetSafe ScoopFree Crystal Plus · PETKIT Purobot Crystal Duo