Automatic litter boxes · Best overall

Whisker Litter-Robot 4

85
Highly rated
Average of 11 professional reviews
10 of 11 recommend it · broad agreement
Where the 11 reviews landedRange 77–92
Score printed by the outlet Estimated from the verdict

Exact average 84.7 · 4 printed, 7 estimated · printed scores only: 88

Whisker Litter-Robot 4Image: Whisker

11 professional reviewers tested the Whisker Litter-Robot 4, and 10 recommend it. Most praised: smart features and quiet. Most common complaint: price.

Reviewed by Catster, WIRED, ZDNET and 8 more

The catch: It is very expensive for a litter box.

7 of these 11 outlets print no score. We estimated theirs from the review text, then adjusted the estimates against the ratings outlets actually print (ours ran slightly low). An estimate is never higher than 92.

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What 11 critics said

Highest score first · all converted to 0–100
  1. 92
    CatsterHands-on review

    Very favourable review from a multi-cat home: automatic, easy to clean, odor-trapping and safe, with a 90-day trial.

    Read Catster review
  2. 90
    WIREDHands-on review

    A sleek, nearly silent automatic litter box with strong odor control, safety sensors and a useful app, though expensive and not every cat will accept it.

    Read WIRED review
  3. 90
    ZDNETHands-on review · 2025

    The reviewer calls the Litter-Robot 4 life-changing, praising the no-scoop cleaning, odor control, quiet running and health tracking.

    Read ZDNET review
  4. 79
    CNETHands-on review · 2023

    A solid, quiet and well-engineered robotic litter box with flawless sifting and a helpful app.

    Read CNET review
  5. 89est.
    9to5ToysNo printed score · Hands-on review · 2024

    The reviewer is very happy with the Litter-Robot 4 and the LitterHopper add-on, finding it a clear step up from the previous generation for odor, litter use and app tracking.

    Read 9to5Toys review
  6. 83est.
    Good HousekeepingNo printed score · Hands-on review

    A four-year user says the Litter-Robot 4 is worth buying if the budget allows, thanks to no scooping, quiet running and hidden waste.

    Read Good Housekeeping review
  7. 83est.
    Digital TrendsNo printed score · Hands-on review

    The reviewer finds the self-scooping box works well and would recommend it to cat lovers.

    Read Digital Trends review
  8. 83est.
    Tom's GuideNo printed score · Hands-on review

    Ranked second in a robotic litter box roundup after more than a year of use by the writer's cats, who used it heavily.

    Read Tom's Guide review
  9. 83est.
    Forbes VettedNo printed score · Buying guide · 2026

    In a tested roundup the Litter-Robot 4 is named the best-value Litter-Robot and praised for space, quiet running and odor control.

    Read Forbes Vetted review
  10. 83est.
    Business InsiderNo printed score · Buying guide · 2026

    In a tested litter box guide the Litter-Robot 4 is the best automatic pick, valued for hands-off cleaning, safety and tracking.

    Read Business Insider review
  11. 77est.
    EngadgetNo printed score · Hands-on review · 2023

    It reduces litter chores and masks odor, but pairing problems, sensor faults, missed cycles and litter spillage make it hard to trust at $699.

    Read Engadget review

"Est." means the outlet printed no score, so we estimated one from its verdict and checked our estimates against ratings outlets print. How we check estimates

What critics praise most

Smart features7 of 11
Quiet6 of 11
Cleaning performance4 of 11

What critics dislike most

Price9 of 11
Size and weight3 of 11

Compare the Whisker Litter-Robot 4 with another product →

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Common questions

Is the Whisker Litter-Robot 4 worth it?

Most critics think so: 10 of 11 recommend it. It is very expensive for a litter box.

Do critics agree about the Whisker Litter-Robot 4?

Broad agreement: scores range from 77 (Engadget) to 92 (Catster), a spread of 15 points across 11 reviews. Most reviewers land fairly close together.

What do critics dislike about the Whisker Litter-Robot 4?

Price (9 of 11 reviews), Size and weight (3 of 11 reviews).