Overview
The PETKIT PuraMax 2 is an enclosed self-cleaning litter box built around a large rolling drum. After a visit, the drum rotates to sift clumps into a sealed side bin, and the PETKIT app logs each cat’s use and weight. It sits in the middle of our smart litter box picks: better equipped than the budget options, at a price well below the Litter-Robots.
Its most useful safety detail is the entrance. PETKIT designed it to stay open at all times, so even if a sensor fails, a cat cannot be closed in. Cats.com’s reviewer singled out that open entrance, along with odour control and a leak-resistant liner, in an otherwise mixed 3.8/5 review. The sealed waste bin also locks, which helps keep curious dogs out of it.
Key features
- For cats 3.3–22 lb (1.5–10 kg)
- xSecure sensor system (Cats.com counted 11 sensors) and an always-open entrance
- 76 L drum and a 7 L sealed side bin; PETKIT says up to about 15 days for one cat
- Accepts most clumping litters, including clay, tofu and mixed; two sifters included
- N50 odour eliminator included
- 2.4 GHz Wi-Fi; PETKIT app with per-cat usage and weight
- 24.4 x 21.2 x 21.7 in; about 22 lb
Who it suits (and who should skip it)
It fits one- or two-cat homes with small to average cats, where you want proper sensors and good odour control without paying Litter-Robot money. Flexibility on litter is a real advantage if your cat prefers tofu or a mixed formula.
Skip it for very large cats. The entrance is compact, and big cats may refuse to squeeze in even if they are under the 22 lb limit. It also needs a hard, level floor for accurate weighing, so thick carpet is a problem. Full deep cleans and litter changes are fiddlier than on simpler boxes. Kittens under 3.3 lb should not use it in automatic mode.
One more note: PETKIT’s own site now points the PuraMax 2 page towards a newer model, the Purobot Max 3. The PuraMax 2 remains listed on Amazon, but check stock and seller before buying, and make sure replacement parts are still easy to find.
Costs to know about
We found no subscription requirement. Ongoing costs are PETKIT-sized waste bags, N50 odour eliminator refills, optional smart-spray refills if you add that accessory, and litter. The Amazon listing title refers to 2-year coverage; we could not read the full warranty terms, so confirm them with the seller.
How it compares
The Litter-Robot EVO costs more but brings Whisker’s long track record and Canadian support network, with a slightly lower 19 lb limit. The Neakasa M1 Plus Lite is the better choice for large or hood-shy cats, with an open top and a 33 lb ceiling, though it contains odour less well than an enclosed drum.
Pros and cons
What we like
- Entrance stays open, so a cat cannot be trapped
- Large sealed 7 L bin with included odour eliminator
- Works with clay, tofu and mixed clumping litters
- Well below Litter-Robot pricing for a full sensor suite
Watch out for
- Compact entrance may put off very large cats
- Needs a hard floor for accurate weighing
- Brand appears to be moving to a successor model
Our rating: 4.2/5
| Build quality | 4.2 |
|---|---|
| Ease of use | 4.0 |
| Safety & trust | 4.4 |
| Value | 4.3 |
| US & Canada availability | 3.9 |
Our rating is an editorial score based on the brand's published specs, independent reviews, safety and trust signals, value and availability in the US and Canada. It is not Amazon's customer rating, and brands do not pay for placement.
Frequently asked questions
What size cat can use the PETKIT PuraMax 2?
PETKIT rates it for cats weighing 3.3 to 22 lb (1.5 to 10 kg). The entrance is fairly compact, so a long or large-framed cat may be uncomfortable even under the weight limit. Kittens below 3.3 lb should not use it in automatic mode; keep cleaning manual until they reach the minimum.
What litter can I use in the PuraMax 2?
Most clumping litters, including bentonite clay, tofu and mixed formulas. PETKIT includes two sifters to suit different grain sizes. Non-clumping litters will not separate properly, so they are not a good fit. Stay with one litter type once your cat has settled in.
Is the PuraMax 2 being discontinued?
PETKIT has not said so on the pages we read, but its PuraMax 2 product URL now appears to show a newer model, the Purobot Max 3. The PuraMax 2 is still listed on Amazon.ca and Amazon.com. Check stock, seller and the availability of bags and odour refills before you commit.
Does the PuraMax 2 need a subscription?
We found no required subscription. The PETKIT app shows usage and weight for each cat without a paid plan. Ongoing costs are waste bags, N50 odour eliminator refills and litter, plus optional spray refills if you add that accessory.
This page is general information, not veterinary advice. Check with your vet before changing your pet's food or adding a supplement.
