Purobot Ultra specs
| Brand | PETKIT |
|---|---|
| Mechanism | Tilting drum |
| Cat weight (automatic mode) | 3.3–22 lb |
| Minimum age | 6 months (maker guidance) |
| Cats per box | The maker gives no number |
| Kittens & small cats | PETKIT recommends it for cats 6+ months old and at least 3.3 lb. |
| Safety sensors | Weight, Proximity, Camera. Weight and proximity sensors plus an AI camera on a swiveling arm that tracks the cat (PETKIT, WIRED). |
| Entrance during cleaning | Not confirmed by the maker or a named review |
| Litter | Clumping. Clumping litter; PETKIT sells tofu and mixed litters for it. |
| Waste drawer | Seals the full bag and loads a new one automatically. |
| Footprint | 20.87 × 26.77 in, 32.68 in tall |
| Unit weight | 46 lb |
| App / Wi-Fi | Yes (2.4 GHz and 5 GHz) |
| Camera | Yes |
| Self-bagging | Yes, seals waste bags automatically |
| Odor control | Self-sealing bags plus a proprietary odor eliminator ($20 for three refills, per WIRED). |
| Consumables | PETKIT bag rings for the auto-bagger and odor-eliminator refills. PETKIT says its N50 refill is not compatible. Proprietary: the box needs the maker's refills. |
| Warranty | 2 years per the Amazon listing |
| Price tier | $$$$ Flagship ($800 and up). WIRED's review page showed $800 at Amazon on Nov 12, 2026; Amazon bundle listings showed about $762–$802. |
- Dimensions (20.87 × 26.77 × 32.68 in), weight (46 lb) and the 3.3–22 lb / 6+ months guidance come from the Amazon listing.
- We couldn't confirm the entry size from PETKIT, so the safety checker can't size it for large cats.
Running costs: with our defaults, consumables for one cat come to about $10.97 a month plus litter. See the full breakdown in the cost calculator.
Specs are compiled from manufacturer pages, Amazon listings and independent reviews and can change between production runs. Confirm the weight range and what's in the box on the Amazon page before buying.
We haven’t tested the PETKIT Purobot Ultra ourselves. This review draws on WIRED’s full review, which gave it 8 out of 10, and its automatic litter box roundup, plus the Amazon listing for specs.
The Purobot Ultra is PETKIT’s gadget flagship. It’s a front-entry drum that sifts waste, seals the full bag and loads a new one by itself, and films every visit with an AI camera on a swiveling arm. WIRED’s review page showed $800 at Amazon on November 12, 2026, and Amazon bundle listings ran about $762–$802. Check the price before you buy.
Who it’s for (and who should skip it)
It’s for owners who want a camera on every visit and never want to handle a waste bag. If self-bagging matters to you, this is the PETKIT that does it. WIRED found it worked well and kept smells at bay.
Skip it if you want the best value from PETKIT. The Purobot Max Pro 2 gives you a camera and a published 10.51 × 10.74 in entry for about $250–$300 less, and it’s WIRED’s current top pick. Skip it too if you lift litter in and out often, because WIRED found it hard to refill. If you mainly want a self-bagging box at a lower price, read our Furbulous review first, as a warning rather than a recommendation.
How it cleans, and how safe it is
PETKIT and WIRED say weight and proximity sensors work alongside the camera, which sits on a swiveling arm that tracks the cat. PETKIT recommends it for cats 6 months and older that weigh at least 3.3 lb.
Two safety points remain open. First, whether the entrance stays open through the whole cycle is not confirmed: neither PETKIT nor a named review in our sources states it for the Ultra. Second, we couldn’t confirm the entry size, so our cat safety checker can check weight and age but can’t size the entry for a large cat. WIRED’s description of the interior as “kind of cramped” suggests big cats may be better off elsewhere.
For the background on why entrance design matters, read are self-cleaning litter boxes safe?.
Living with it
Auto-bagging
This is the Ultra’s main selling point. When the bag is full, the box seals it and loads a new one, so emptying means lifting out a sealed bag. That’s genuinely less handling than any other box we cover except the Furbulous, which cats.com found unreliable.
The camera
The camera offers night vision, two-way audio and stool snapshots after each cycle, and it recognizes multiple cats by face. WIRED found the video black-and-white and low detail, and the analytics flat. It’s fun to check, but don’t buy it expecting a vet-grade health monitor.
Refilling and size
WIRED found it hard to refill with litter because of the camera arm. The box is 20.87 × 26.77 × 32.68 in and weighs 46 lb, far heavier than any other box we have a weight for. Measure the space, including height, before you order, and place it somewhere you won’t need to move it. It connects on both 2.4 GHz and 5 GHz Wi-Fi.
Litter
It uses clumping litter, and PETKIT sells tofu and mixed litters for it. See best litter for self-cleaning litter boxes.
Running costs
The Ultra’s consumables are proprietary. The odor eliminator costs $20 for three refills (WIRED), about one a month. We couldn’t confirm the bag-ring price, so our cost model uses Whisker’s $1-per-liner price as a stand-in at PETKIT’s suggested change rate of about 4.3 per cat per month. Litter is Dr. Elsey’s Ultra at $22.99 for 40 lb from Chewy, at 10 lb per cat per month.
That’s about $16.71 a month, or roughly $201 a year, for one cat. Over five years, with the box at $800, we estimate about $1,803 for one cat and about $2,406 for two. Because the bag-ring price is a stand-in, treat those totals as rough. Enter your own figures in the cost calculator.
What you’ll need beyond the box
- Bag rings and odor refills: buy PETKIT’s own, made for the Ultra. PETKIT says its N50 refill doesn’t fit, and the standard PETKIT bag rolls are for the PuraMax 2 and Max Pro, not the Ultra’s auto-bagger.
- Litter: Dr. Elsey’s Ultra unscented, 40 lb, or PETKIT’s tofu or mixed litter.
- Mat: a Gorilla Grip 35 × 23 in mat.
The Amazon listing gives a two-year warranty.
Bottom line
The Purobot Ultra is for gadget lovers. It bags its own waste and films every visit, and WIRED rated it 8 out of 10 and found it kept odors down. For most homes, though, the camera adds more novelty than health insight, the arm makes refilling awkward, it’s huge, and the running costs are proprietary. We’d steer most people to the Purobot Max Pro 2, which has the camera and an entry WIRED’s 17-lb cat used easily, for less, or the Litter-Robot 4 at a lower price than the Ultra. If self-bagging is the feature you can’t live without, it’s the better of the two self-bagging boxes we cover. See how it ranks in best self-cleaning litter boxes of 2026, or check the Purobot Ultra price.
Litter and supplies for the Purobot Ultra
Litter, liners, odor refills and mats sold on Amazon that fit this box. Check the listing confirms your exact model before you buy.
- LitterDr. Elsey's Ultra unscented clumping clay cat litter, 40 lbCompatible, third-party
Unscented, hard-clumping, standard-weight clay: the type Whisker recommends and most globe and drum boxes are tuned for. Not for ScoopFree crystal trays. Check your box's sifter: PETKIT asks for granules under 0.5 in.
- Litter matGorilla Grip cat litter mat, 35 × 23 inUniversal fit
Big enough to catch scatter from most globe boxes; textured backing stays put.
- Litter matGorilla Grip cat litter mat, extra large, 40 × 28 inUniversal fit
The size we'd put under open-top boxes, which both WIRED and Tom's Guide found fling more litter.
- Litter matiPrimio jumbo cat litter trapper mat, 32 × 30 inUniversal fit
Honeycomb two-layer mat with a waterproof layer, for cats that kick litter far.
Compatibility checked November 2026. More in our litter and supplies guide.
Featured in our guides
- Best Self-Cleaning Litter Box With Health Monitoring: Weight, Visit and Camera Tracking Compared
- PETKIT Purobot Ultra vs Litter-Robot 5: Self-Bagging Camera Box or Big-Cat Globe?
