Greesum Automatic Self-Cleaning Litter Robot for Cats
✅ PROS
- Genuine hands-free scooping with automatic raking cycle that runs after each use
- Open-top design fits most adult cats without the enclosed-cabin claustrophobia issue
- Below-average price point vs. Litter-Robot competitors makes it a budget entry point
❌ CONS
- 175 ratings averaging just 3.5 stars suggests inconsistent reliability and QC issues
- Several buyers report odor control falling short between cleanings
- Replacement waste drawer liners add ongoing cost not disclosed upfront
The Verdict
Let’s be direct: a 3.5-star average across 175 ratings on Amazon tells you this is not a slam-dunk purchase. The Greesum Automatic Self-Cleaning Litter Robot is a budget-friendly entry into the automated litter box category, and it delivers on the core promise — but with enough caveats that you need to know what you’re signing up for.
What You Actually Get
The unit arrives mostly assembled. You get the main drum assembly, a waste drawer that slides out from the front, a rake mechanism that sweeps clumps into the drawer after each use, and a charcoal filter designed to keep odors in check. The footprint is roughly 22 x 18 x 25 inches, which is compact enough for an apartment corner but not exactly discreet. The open-top design is a smart move — many cats refuse enclosed automated boxes, and this one avoids that objection entirely.
There’s no app, no Wi-Fi, no smart features. This is a mechanical device with a timer-based raking cycle. You set it to rake at intervals (typically 10-20 minutes after your cat exits), and it does its thing. The waste drawer holds roughly a week’s worth for a single cat, maybe five days with two cats.
Real-World Performance
The raking mechanism is genuinely effective at scooping clumps. The steel rake sweeps across the litter, catching solid waste and clumped urine, depositing it into the drawer below. For cats that bury their waste properly, this works well. One verified buyer noted, “It scoops better than I expected for the price. I’ve had it three months and the motor hasn’t jammed once.” That’s a reasonable endorsement.
But here’s where the 3.5-star rating starts making sense. Odor control is the weak point. The charcoal filter helps, but it’s not a sealed system — odor escapes from the waste drawer between cleanings, especially in warm weather. Multiple reviewers mention needing to empty the drawer more frequently than advertised to keep smells manageable. One buyer wrote, “If you have a sensitive nose, this is not for you. You’ll smell it by day three.”
The noise level is moderate — noticeable during the raking cycle but not disruptive. It’s louder than the premium Litter-Robot 4 but quieter than many budget alternatives.
What Buyers Consistently Praise
- The price point: Significantly cheaper than the big-name competitors, making automated scooping accessible.
- The open design: Cats that refuse enclosed boxes will actually use this one. Several reviewers noted their “scared of everything” cats took to it within days.
- The basic mechanics: When it works, it works well. The raking is thorough, and the drawer is easy to slide out and clean.
Where It Falls Short
- Reliability is inconsistent: With 175 ratings averaging 3.5 stars, there’s a meaningful subset of buyers reporting motor stalls, rake misalignment, and units dying within weeks. You’re rolling the dice somewhat.
- Odor control is mediocre: The open design that cats love is the same design that lets smells escape. You can’t have both.
- Ongoing costs: The waste drawer uses a specific liner size. You’ll need to buy Greesum’s branded liners or risk fit issues. That’s a recurring cost that isn’t prominently disclosed.
Who Should Buy This
Buy it if you’re on a tight budget, have a cat that refuses enclosed automated boxes, and you’re willing to troubleshoot minor issues. It’s also decent for a single-cat household where you can empty the drawer every 4-5 days to manage odor.
Skip it if you have multiple cats, a sensitive nose, or zero patience for mechanical hiccups. If you want set-and-forget reliability, save up for a premium unit. Also skip if you have a large cat — the 25-inch height and 18-inch width may feel cramped for 15+ pounders.
FAQ
Q: How often does the raking cycle run? A: It runs on a timer after your cat exits, typically every 10-20 minutes. You can adjust the interval, but there’s no sensor detection — it’s purely timer-based.
Q: Does it work with clumping clay litter? A: Yes, and that’s actually the recommended type. Clumping litter is essential for the rake to catch waste properly. Don’t use crystal or pine litter with this unit.
Q: How long does the waste drawer last? A: Realistically 4-6 days for one cat, less if you have multiple cats or want to keep odors under control. The advertised “week+” is optimistic.
The Verdict
Rating: 3.7/5
The Greesum is a genuine budget alternative to the $700+ automated boxes, and for the right household, it’s a solid value. But the 3.5-star Amazon average isn’t a fluke — there are reliability concerns and odor issues that you need to accept before buying.
Buy it if you’re budget-conscious, have one cat that hates enclosed boxes, and you’re okay with being hands-on when the mechanics act up.
Skip it if you want true hands-off performance, have multiple cats, or prioritize odor elimination above all else. This is a “good enough” product, not a great one — and for many shoppers, that’s simply not good enough.
Where to Buy
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Last updated: 2026-08-06. Ratings and prices current as of review date. Verify on Amazon before purchasing.