What fits, item by item
Litter-Robot 5 Whisker
ConfirmedUse the Whisker app for onboarding, monitoring and supported controls; onboarding requires app 1.31.0+, Bluetooth and location permission.
United StatesCheck the conditions and source
Litter-Robot 5 Litter-Robot 5 LitterHopper
ConfirmedLitter-Robot 5 is explicitly supported; update to firmware 5.9.6+ and Whisker app 1.38+ before installing the 17.3-cup LitterHopper.
United StatesCheck the conditions and source
Litter-Robot 5 Litter-Robot Waste Drawer Liners
ConfirmedFive Litter-Robot waste-drawer liners are listed in the U.S. package.
United StatesCheck the conditions and source
Litter-Robot 5 Litter-Robot Carbon Filter
ConfirmedOne carbon filter is listed in the U.S. package; official care guidance says the filter is optional for operation and is normally replaced about monthly.
United StatesCheck the conditions and source
Particle fit does not settle every litter question
Start with the recommended material: standard-weight clay clumping litter. Small beads or crystals are conditional options only if they pass through the screen. The condition matters more than a broad label such as crystal litter.
Then consider the litter-level sensor separately. White or translucent material may reduce its accuracy even if the particles pass the screen. A sifting match does not remove that sensor limitation.
- Recommended: standard-weight clay clumping litter.
- Conditional: small beads or crystals that pass the screen.
- Not supported: non-clumping, newspaper-based and absorbent wood-pellet litter.
Before installation, verify both software versions
The refill add-on is specifically the Litter-Robot 5 LitterHopper. Its documented preparation requires device firmware 5.9.6 or later and Whisker app 1.38 or later. Check both—not just whether the phone has the Whisker app installed.
The 17.3-cup figure describes accessory capacity. It is not a refill interval for every household. Keep the capacity, exact accessory identity and installation requirements together when reviewing a bundle.
What is supplied, and what is recurring?
The U.S. package lists 5 waste-drawer liners and a carbon filter. The filter’s care guidance is about monthly replacement under normal use, while also stating that it is not required for operation. Neither item should be confused with an optional automatic-refill add-on.
Use the named model-to-accessory relationships for the items you plan to buy. They confirm the documented products, not all same-brand or third-party substitutes.
Whisker Support · www.litter-robot.comWhisker Support · www.litter-robot.comWhisker Support · www.litter-robot.com
The app requirement is not a Whisker+ requirement
The connected setup uses 2.4 GHz Wi-Fi with IPv4 or IPv6; 5 GHz is not supported for this model. Whisker+ is optional. A membership offer should not replace the practical checks for app version, device firmware and network support.
Whisker Support · www.litter-robot.comWhisker Support · www.litter-robot.comWhisker · www.whisker.com
FAQ
Litter-Robot 5 frequently asked questions
Each answer stays within the facts and sources shown on this page.
01Are all crystal litters suitable for the screen and sensors?
No blanket approval is documented. Small beads or crystals may work only if they pass the screen, and white or translucent litter can reduce litter-level sensor accuracy. Whisker's preferred option is standard-weight clay clumping litter.
02Must I subscribe to Whisker+ to operate the litter box?
No. Whisker+ is optional for this model. Do not confuse a membership offer with the app and network requirements needed for connected setup.
03Which versions should I check before adding LitterHopper?
The documented installation prerequisites are device firmware 5.9.6 or later and Whisker app 1.38 or later. The compatible refill accessory has a 17.3-cup capacity; check both software versions before installation.