Best self-cleaning litter boxes under $700, compared

Which three, and why these three

Let's be straight about the shape of this market before naming anything: there are roughly two dozen app-connected, automatically sifting litter boxes selling under $700 in the US right now, from at least a dozen brands. Anyone telling you the field narrows to three is drawing the boundary somewhere they haven't told you about.

Here's ours, stated plainly. The three below are the ones we can compare down to the spec sheet, from published manufacturer documentation, on the same rotating-drum sifting principle — and the ones this site has years of accumulated repair and troubleshooting depth on, which is what we can actually add to a spec table. That's a scope, not a verdict on the rest of the market. What else is under $700 covers the alternatives we'd expect a careful shortlist to include.

• Litter-Robot 4 — $699 at Whisker, $599 reconditioned.
• Litter-Robot EVO — $599.
• PETKIT Pura Max 2 — $499.99 at Petco, $399.99 at Chewy at the time of writing.

We haven't run all three side by side in our own home, so this isn't a hands-on shootout. Prices in this category move constantly, and the PETKIT in particular swings $100 between retailers on the same day — confirm the current price before you buy. The sticker price is also the part that matters least by year three: for the two Whisker models here, our Litter-Robot running-cost calculator adds the filters, liners and power on top, at your own number of cats.

Side by side

Two notes on that table, because they're the kind of thing a spec sheet hides.

The Pura Max 2's footprint is published — 620 x 538 x 552 mm in PETKIT's own manual — and it's the smallest and by far the lowest of the three, four inches shorter than the EVO and nearly eight shorter than the Litter-Robot 4. What PETKIT does *not* publish anywhere is an entryway opening dimension, and that's the one measurement a large-cat household actually needs. Whisker publishes it for both of its models.

And the 22 lb cat ceiling deserves a flag: PETKIT's own spec pages give a cat weight range of 1.5–10 kg, but the unit itself also weighs about 10 kg, and the two numbers get copied into each other constantly online. Retailer listings for the same box variously claim 18 lbs and 17.6 lbs. If your cat is near the top of that range, this is not a spec you should trust to a product page.

Who each one is actually for

Litter-Robot EVO is the narrowest of the three at 20.6" wide — the pick for a tight alcove, a studio, or any home where the Litter-Robot 4's footprint doesn't clear. Note it's narrow rather than small overall: the Pura Max 2 is the one that's genuinely low-profile. The EVO is also the hard cap on cat capacity here, rated for up to two cats between 3 and 19 lbs, so it's the wrong pick for a larger multi-cat household.

Litter-Robot 4 takes the most floor space of the three and has the highest documented cat capacity of them, up to four cats at 3–25 lbs. Its real advantage is track record: it's the model most of the troubleshooting knowledge, replacement parts and third-party accessories on this site exist for, which is worth something in year three in a way it isn't on day one.

PETKIT Pura Max 2 is the lowest sticker price of the three — $200 less than a Litter-Robot 4 at Petco's $499.99, and $300 less at Chewy's $399.99. It's also the one to buy with your eyes open, and on three counts rather than one. There's no published entrance opening dimension. The warranty is two years but only holds if you bought new, in the US, from PETKIT or an authorized distributor — secondhand or grey-market units aren't covered at all. And per our own cost-of-ownership breakdown, the support experience several documented cases describe works considerably better inside that window than outside it.

One more thing worth knowing before you commit to it: PETKIT has moved on. Its own site no longer sells the Pura Max 2 — the URL now serves the newer Purobot Max 3 at $399.99, which shares the same chassis and adds an entryway 43% wider, by PETKIT's own measurement. The Pura Max 2 remains in PETKIT's warranty policy, keeps its own accessory range, and is still stocked at Chewy, Petco and Best Buy, so this isn't a reason to avoid it. But you're buying a model the manufacturer has already succeeded, and if entrance width is your constraint, PETKIT has told you which of its own boxes to pick instead.

What else is under $700

Naming three boxes and calling it the market would be a comfortable lie, so here's what we left out of the table and why you might not want to. We haven't tested these either, and we don't hold repair documentation on all of them — but a shortlist that ignores them isn't a shortlist.

• PetSafe ScoopFree SmartSpin, $399.99, and OpenSky, $549.99. PetSafe is the most established mainstream brand in the category, both are app-connected, and the SmartSpin undercuts everything in our table.
• PETKIT Purobot Max 3, $399.99. The Pura Max 2's own successor, same price as the Pura Max 2's street price, wider entry.
• PETKIT Purobot Max Pro 2, $499.99. Has the AI camera and facial recognition that the Litter-Robot 4 and EVO don't, at $200 less than a Litter-Robot 4.
• Casa Leo's Leo's Loo Too, $599.99. The closest direct rotating-drum analogue to a Litter-Robot at the EVO's price, stocked at Petco.
• Neakasa M1 Plus, around $379.99 on sale. Open-top design, Best Buy distribution, widely reviewed.
• CATLINK Scooper Luxury Pro-X, $439, and Scooper Pro Ultra, $599. A long-running brand with real retail history.

Count them up and you're already past a dozen models under $700 before reaching the Amazon-tier brands. The useful question isn't which three qualify; it's which constraint in your own home — cat size, floor space, ceiling height, budget, or how much you care who answers the phone in year three — decides it.

What you give up under $700

None of the three boxes in our table includes a camera or facial-recognition cat ID. Within Whisker's lineup, cameras are exclusive to the Litter-Robot 5 Pro at $899 — the manual confirms the globe camera and the dual 1080p night-vision system are Pro-only — and the standard Litter-Robot 5 at $799 adds WasteID, which detects whether a visit was a #1 or a #2, and which neither the 4 nor the EVO has. Both sit above this budget.

That's a Whisker limitation, though, not a $700 limitation, and the difference matters if a camera is what you're after. PETKIT's Purobot Max Pro 2 has an AI camera with facial recognition at $499.99, and CATLINK's Scooper Pro Ultra is camera-equipped at $599. So if per-cat camera ID is the deciding feature, you don't have to leave the budget — you have to leave Whisker.

What no box under $700 gives you is the combination: Whisker's warranty and support depth *and* a camera. That's the $899 purchase.

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