Purobot Crystal Duo vs Self-Cleaning Litter Box
One requires the maker's own litter, the other takes standard litter
Petkit Purobot Crystal Duo
Buy now$199.99
Currently listed price on petkit.com for this open-top disposable-tray model.
▲ +$40 · Oct 8, 2026Buy now
Where the published data differs
Every line below is computed from the two manufacturers’ own figures. Attributes neither brand publishes are omitted.
- Purobot Crystal Duo lists at $199.99, $199.01 below Self-Cleaning Litter Box at $399.
- Proprietary litter required: published for Purobot Crystal Duo, not for Self-Cleaning Litter Box.
- Warranty: Purobot Crystal Duo 24 months versus Self-Cleaning Litter Box 12 months (100% more). Published data favours Purobot Crystal Duo.
- Minimum cat weight: Purobot Crystal Duo 3.3 lbs versus Self-Cleaning Litter Box 2.2 lbs (50% more). Published data favours Self-Cleaning Litter Box.
- Litter type required: Purobot Crystal Duo — Petkit Crystal litter disposable tray; Self-Cleaning Litter Box — Clumping bentonite, tofu, crystal or mineral sand (no strip-shaped litter).
- Cleaning cycle trigger: Purobot Crystal Duo — Automatic after the cat exits, with app scheduling; Self-Cleaning Litter Box — Automatic after each visit, once the cat has left.
- Odor control method: Purobot Crystal Duo — Disposable absorbent crystal litter tray; Self-Cleaning Litter Box — Plasma sterilization plus fresh air system and sealed waste drawer.
- Footprint: Purobot Crystal Duo — 32.2 x 19.96 x 13.14 in; Self-Cleaning Litter Box — 22.8" D × 20.3" W × 21.4" H.
Full specification comparison
| Attribute | Purobot Crystal Duo | Self-Cleaning Litter Box |
|---|---|---|
| Multi-cat suitable | Yes | Yes |
| Minimum cat weight | 3.3 lbs | 2.2 lbs |
| Maximum cat weight | Not published | 17.6 lbs |
| Waste drawer capacity | Not published | 9 L |
| Litter type required | Petkit Crystal litter disposable tray | Clumping bentonite, tofu, crystal or mineral sand (no strip-shaped litter) |
| Proprietary litter required | Yes | No |
| Proprietary waste bags required | No | Not published |
| Subscription required | Yes | Not published |
| Cleaning cycle trigger | Automatic after the cat exits, with app scheduling | Automatic after each visit, once the cat has left |
| Adjustable cycle delay | Yes | Not published |
| App control | Yes | Yes |
| Weight sensing | Yes | Yes |
| Health monitoring | Yes | Yes |
| Odor control method | Disposable absorbent crystal litter tray | Plasma sterilization plus fresh air system and sealed waste drawer |
| Entry height | 7.08 in | Not published |
| Interior dimensions | Not published by either | Not published by either |
| Footprint | 32.2 x 19.96 x 13.14 in | 22.8" D × 20.3" W × 21.4" H |
| Operating noise | Not published | 40 dB |
| Power source | AC adapter, 12V/2A | 12 V DC adapter |
| Battery backup | No | Not published |
| Warranty | 24 months | 12 months |