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Review

Litter-Robot 4 Review 2026

By The PetWise Team6 min read
9.5

Litter-Robot 4: product facts and buying notes

This page organizes the supplied self-cleaning litter boxes information: The highest-rated automatic litter box on the market. Its patented sifting process quietly separates waste from...

Visit Litter-Robot 4 official site

What We Like

  • Whisper-quiet QuietSift cleaning cycle
  • Strong odor control with a sealed drawer
  • SmartScale tracks weight & usage
  • 90-day in-home trial
  • One unit serves up to 4 cats

What We Don't

  • Premium price
  • Large footprint (22" x 27")
  • Needs clumping clay litter

Quick Specs

Cats supported
Up to 4
Entry opening
15.75" x 15.75"
Footprint
22" x 27"
Weight (empty)
24 lbs
Power
15V DC
Warranty
1-year WhiskerCare

Frequently Asked Questions

Will it work for large cats?

Yes — it fits cats from 3 to 25 lbs, including large breeds like Maine Coons.

Does it need special litter?

Use a standard-weight clumping clay litter; most crystal and plant-based litters are not recommended.

What if my cat won't use it?

Over 95% of cats acclimate, and there is a 90-day in-home trial if yours does not.

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Ready to try Litter-Robot 4?

The highest-rated automatic litter box on the market. Its patented sifting process quietly separates waste from...

Visit Litter-Robot 4 official site