Litter-Robot litter box filters and liners by part number

Whisker's custom-fit drawstring liners for the Litter-Robot waste drawer. Whisker says they fit any Litter-Robot model; the white version reads more accurately on the Litter-Robot 4 and later. Change the liner whenever you empty the drawer: about weekly for one cat, twice a week for two. Plain white kitchen bags also work, but dark bags can upset the drawer-level reading.

After the change: After fitting a new liner, zero the weight sensors: Reset (Litter-Robot 3 and 4) or Cancel (Litter-Robot 5). On a Litter-Robot 3 Connect also tap Reset Gauge under Controls in the Whisker app.

Fits 4 Litter-Robot models: 3 Connect, 3 Open Air, 4, 5.

The carbon filter pad for every Litter-Robot 3, including the 3 Connect. On this model it sits in a slot in the front wall of the waste drawer, held by hooks, and absorbs odour and moisture. Whisker recommends a new one every month. It is a different shape from the Litter-Robot 4 filter, which does not fit.

Change it every month; 5 steps, no tools.

After the change: No reset needed.

Fits 2 Litter-Robot models: 3 Connect, 3 Open Air.

Whisker's flexible carbon filter pad for the Litter-Robot 4 and Litter-Robot 5. It sits in a pocket on the outside of the globe, over the waste drawer, and soaks up odour. Whisker recommends a new pad every month, more often with scented litter. It does not fit the Litter-Robot 3. Cat Evolution, Whisker's authorised Australian reseller, sells it in sixes.

Change it every month; 5 steps, no tools.

After the change: No filter counter. Start a filter change from Controls > Replace Filter in the Whisker app; when the globe is back home, press Reset (Litter-Robot 4) or Cancel (Litter-Robot 5) to zero the weight sensors, Whisker says.

Fits 2 Litter-Robot models: 4, 5.

A Litter-Robot 3 refresh kit: two carbon filters for the waste drawer plus a set of the seal strips that sit around the base. Whisker says change the filter monthly and the strips when they are worn flat or peeling. It fits any Litter-Robot 3, not the Litter-Robot 4.

Change it every month; 5 steps, no tools.

After the change: No reset needed.

Fits 2 Litter-Robot models: 3 Connect, 3 Open Air.