Litter-Robot 4 Review: Is the Self-Cleaning Litter Box Worth $699?

At $699, the Litter-Robot 4 is priced like a small appliance, and Whisker wants you to think of it that way — a set-and-forget box that separates waste automatically and only asks you to empty a sealed bag every few days. We tested it in a two-cat household to stress the capacity claims harder than a single-cat home would.

The step-in entry height dropped noticeably from the Litter-Robot 3, which mattered immediately: our older cat, who'd avoided the 3 because of the climb, used the 4 within the first day. The seven-minute clean cycle timer worked as advertised, though with two cats it triggered often enough that we noticed the hum.

Six weeks of real household data

• Waste drawer with the accessory bags genuinely contains odor — no daily scoop smell in the room
• App notifications for drawer-full and litter-low are accurate, not just decorative
• Lower entry height than the previous generation is a real accessibility improvement, not a marketing footnote

The moment our thirteen-year-old actually stepped over the rim instead of side-eyeing it from the doorway, the price stopped feeling like the point.

Where it fell short

• Two cats emptied a full drawer in about four days, faster than the 'up to 7 days' claim suggests for multi-cat homes
• Replacement carbon filters and waste bags add a real recurring cost most buyers don't budget for

For multi-cat households sick of daily scooping, the time and smell savings justify the cost within a few months. For a single easy-going cat in a small apartment, a $40 box and a good scoop routine will get you 80% of the benefit.