Self-Cleaning Litter Boxes Rated for Large Breeds

Maine Coons and other large breeds commonly reach 18 to 25 lb, and an automatic box has to do two things for them: register the weight correctly and leave room to turn round. The first is a stated rating; the second comes down to the entry and the interior. 5 of the 13 boxes below are open-top, which removes the entry question entirely. The enclosed ones list their opening where the maker publishes it.

How this list is ordered: Every box rated by its maker for cats of 25 lb or more, ordered by that rating and then by price. 13 of the catalog’s boxes qualify. 2 of them carry a maker safety notice, not a recall — Neakasa M1 Lite Plus, Neakasa M1 Plus — shown on the card and the model’s page.

  1. Neakasa M1 Lite Plus self-cleaning litter box

    1Neakasa

    ~$329

    Neakasa M1 Lite PlusSafety notice

    About $50 under the M1 Plus, the Lite Plus keeps the open top, the 11.23-litre bin and the 2.2-to-33 lb rating.

    Rated to · entry
    33 lb · Open design — no entry to squeeze through
    Type
    Open-top
    Automate from ~2.2 lb / ~3 months
  2. ELS PETOrbitie AirOpen-top

    2ELS PET

    ~$340

    ELS PET Orbitie Air

    The 2026 open-top Orbitie is built for big cats, with a 33 lb rating and a 16.1-inch-wide opening.

    Rated to · entry
    33 lb · Open design — no entry to squeeze through
    Type
    Open-top
    Automate from ~2.5 lb / ~3 months
  3. Neakasa M1 Plus self-cleaning litter box

    3Neakasa

    ~$380

    Neakasa M1 PlusSafety notice

    Neakasa's current M1 keeps the open top that made the original popular with owners of big cats, and rates it for cats from 2.2 to about 33 lb.

    Rated to · entry
    33 lb · Open design — no entry to squeeze through
    Type
    Open-top
    Automate from ~2.2 lb / ~3 months
  4. PetSafe ScoopFree OpenSky self-cleaning litter box

    4PetSafe

    ~$550

    PetSafe ScoopFree OpenSky

    PetSafe's open-top design has no hood and no globe, so the cat never walks into an enclosure at all.

    Rated to · entry
    33 lb · Open design — no entry to squeeze through
    Type
    Open-top
    Automate from ~3 lb / ~6 months
  5. OneisallCB01Open-top

    5Oneisall

    ~$240

    Oneisall Ease S1 Pro

    For about $240, the Ease S1 Pro claims numbers usually reserved for boxes twice the price: an 11-litre drawer, cats from 2.6 to 30 lb, and a two-year warranty.

    Rated to · entry
    30 lb · Open design — no entry to squeeze through
    Type
    Open-top
    Automate from ~2.6 lb / ~6 months
  6. UBPetC41 ProRotating drum

    6UBPet

    ~$459

    UBPet C41 Pro

    UBPet is the pet brand of the robotics maker UBTECH, and the C41 Pro is its C41 drum with an HD night-vision camera and face recognition added for $60 more.

    Rated to · entry
    30 lb · entry not published
    Type
    Rotating drum
    Kitten threshold not published
  7. Meowant MW-SC09 Plus self-cleaning litter box

    7Meowant

    ~$650

    Meowant MW-SC09 Plus

    The biggest Meowant has a 106-litre drum and a 30 lb rating, matching the Litter-Robot 5 on paper, with an 8.27-inch entry step.

    Rated to · entry
    30 lb · entry not published
    Type
    Rotating drum
    Automate from ~3.3 lb / ~4 months
  8. Whisker Litter-Robot 5 self-cleaning litter box

    8Whisker

    ~$799

    Whisker Litter-Robot 5

    Whisker's 2025 replacement for the LR4 keeps the same 22-by-27-inch footprint and entry but raises the rated weight to 30 lb and the cat count to five.

    Rated to · entry
    30 lb · 15.75-inch-wide entry
    Type
    Rotating drum
    Automate from ~3 lb / ~3 months
  9. Whisker Litter-Robot 5 Pro self-cleaning litter box

    9Whisker

    ~$999

    Whisker Litter-Robot 5 Pro

    What the extra $200 over the LR5 buys is a pair of AI cameras: one identifies which cat walked in by face, the other looks down at the litter bed.

    Rated to · entry
    30 lb · 15.75-inch-wide entry
    Type
    Rotating drum
    Automate from ~3 lb / ~3 months
  10. UBPetC41Rotating drum

    10UBPet

    ~$399

    UBPet C41

    A large drum from UBTECH's pet brand with a 106-litre cabin and an entry 8 inches off the floor, low enough that UBPet says no ramp is needed.

    Rated to · entry
    27.5 lb · entry not published
    Type
    Rotating drum
    Automate from ~2.2 lb / ~3 months
  11. PetSafe ScoopFree SmartSpin self-cleaning litter box

    11PetSafe

    ~$400

    PetSafe ScoopFree SmartSpin

    Two PetSafe documents disagree about this drum.

    Rated to · entry
    25 lb · entry not published
    Type
    Rotating drum
    Automate from ~2.5 lb / ~6 months
  12. Whisker Litter-Robot 4 self-cleaning litter box

    12Whisker

    ~$699

    Whisker Litter-Robot 4

    Four years on, this is still the reference point everything else in the category gets measured against.

    Rated to · entry
    25 lb · 15.75-inch-wide entry
    Type
    Rotating drum
    Automate from ~3 lb / ~3 months
  13. homerunPET CS106 Self-Cleaning Litter Box self-cleaning litter box

    13homerunPET

    ~$699

    homerunPET CS106 Self-Cleaning Litter Box

    The CS106 is named for its 106-litre dome, which homerunPET bills as the largest on sale, and it refills its own litter: a 4.5-litre reservoir feeds the 8-litre bed when a sensor reads it low.

    Rated to · entry
    25 lb · entry not published
    Type
    Rotating drum
    Automate from ~3.3 lb / ~6 months

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