Why it matters
These rings feed the Purobot Ultra's patented auto-packing system, sealing each bag automatically. Each ring packs about 10 times.
With the bin holding up to 20 days of one cat's waste, a 4-pack covers months of use. They work only with the Purobot Ultra.
Who it's for, and who should skip it
Good fit if
- Purobot Ultra owners
- Stocking up
- Hands-off owners
Look elsewhere if
- Other PETKIT boxes
- Non-PETKIT boxes
- Owners avoiding proprietary parts
Pros and cons
Pros
- Auto-sealing
- Months of use
- Official fit
Cons
- Ultra only
- Proprietary
- Plastic
Limitations to weigh
- Compatibility is as the maker or seller states it; check your exact model name and generation before ordering.
- Use the cost-per-month calculator to compare what refills cost over a year, not per pack.
- Stated life is for one cat; with more cats, expect it to run out proportionally faster.
Specifications
Every figure below comes from the source shown in brackets. Where the maker doesn't state something, we say so instead of estimating.
| Capacity | 8 liters | Retailer |
|---|---|---|
| In the pack | 4 Count | Retailer |
| Uses (seller) | Animal Waste | Retailer |
| Material feature | Heavy Duty | Retailer |
| Material | Plastic | Retailer |
| Form | Bag | Retailer |
| Scent | Unscented | Retailer |
| Pieces | 4 | Retailer |
| Product weight | 0.63 kg | Retailer |
| Dimensions (seller) | 5.1 x 6.6 x 9.8 inches | Retailer |
| In the box | 4 Pack Refill Trash Bag Ring | Retailer |
| Warranty | 1 Year Warranty | Retailer |
| Model number | P99034 | Retailer |
Alternatives worth comparing
More litter box supplies we cover
- PETKIT Litter Box Ramp for PuraX and PuraMax
- PETLIBRO Litter Pad for Luma
- PetSafe ScoopFree Front-Entry Cover
- PETKIT Litter Pad Max
All litter box supplies, compared in one table · Every PETKIT product we cover
Final verdict
The only refill for a Purobot Ultra.
Where to buy
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Questions buyers ask
Which box do these fit?
Only the PETKIT Purobot Ultra.
How many times does a ring pack?
About 10, per PETKIT.