Whisker Litter-Robot EVO (LRE-0301)

Whisker Litter-Robot EVO is a rotating globe box for cats of 3 to 19 lb, as claimed. Its sources confirm 6 of 6 safety layers: weight sensor, entry sensor, anti-pinch, open entry, cycle delay, stop button. Sources give different values for unit weight (both shown below).

17 of 22 fields sourcedData checked October 2026

Spec sheet

Manufacturer claims, not our measurements. Small numbers lead to the source list at the bottom of the page.

How it cleans
Rotating globe1
Entry
Open, nothing closes1
Minimum cat weight, claimed
3 lb (1.4 kg) claimed21
Heaviest cat
19 lb (8.6 kg) claimed21
Cats per unit
2 claimed2
Entry height
10.8 in (27.3 cm) claimed1
Width
20.6 in (52.3 cm) claimed21
Depth
24.3 in (61.7 cm) claimed1
Height
27.6 in (70.1 cm) claimed21
Unit weight
Brand site: 21.5 lb claimed2. Manual: 21 lb claimed1.
Litter it takes
clumping litter (clay-clumping recommended); silica beads/crystals small enough to pass the screen (white/translucent not recommended); no plant-based, non-clumping, paper or wood pellets21
App
Whisker app21
Weight sensor
Yes1
Entry presence sensor
Yes (optical)3
Anti-pinch
Yes1
Shortest delay before cleaning
3 min1
Stop button on the unit
Yes1
Bags and filters
Any bags or litter1
Warranty
12 months2
Drawer lasts, one cat
7 days claimed21

Not found in the sources yet: Drum or tray volume, Waste drawer, Noise, Without Wi-Fi, FCC ID, Made by (FCC grantee).

When it acts up

From the troubleshooting section of the manual, in plain words.

Light blinks red, robot stops cycling

Why: The waste drawer is full (Drawer Full Indicator).

What to do: Empty the drawer, then press Cancel to clear the alert and zero the weight sensors.1

False 'drawer full' red light

Why: The liner rides up past the drawer sides, or a dark bag / white or translucent litter confuses the light sensor.

What to do: Push the bag down below the rim, use a white bag, avoid translucent/white litter.1

Light blinks red, no automatic cycle

Why: The waste drawer has been removed or is not detected.

What to do: Reinstall the drawer, press Cancel, then Cycle to resume.1

All 8 problems and fixes

Sources

  1. Litter-Robot EVO Instruction Manual (Whisker; PDF hosted by RobotShop), p. 1, 5, 14-15, 20-27, 35-37, checked Oct 8, 2026
  2. Litter-Robot EVO product page, Details / Specs / FAQ, checked Oct 8, 2026
  3. Litter-Robot EVO Instruction Manual (Whisker; PDF hosted by RobotShop), checked Oct 8, 2026