Accessibility Statement

Litter-Robot 4 Accessory Kit

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Upgrade your Litter-Robot 4 with premium Litter-Robot accessories for hands-free cat litter refills, minimal litter tracking, litter box odor control, and more.

Take pet care to the next level and enhance your Litter-Robot 4: The Accessory Kit includes our best-selling LitterHopper for automatic litter refills, Shield for containing kicked-up litter, and Litter-Robot accessories for greater litter box odor control and convenience.

  • LitterHopper™& new bonnet 
  • Shield 
  • Waste Drawer Liners (25) 
  • Carbon Filters (6)
  • Litter-Robot 4 not included

Specs

Litter-Robot 4 front tech specs
Litter-Robot 4 side tech specs
  • Capacity: 13 cups
  • Motor Power: 12 volts
  • Weight (Empty): 26lbs.
  • Footprint: 28.8’’ x 20’’

FAQ

  • Can I mix and match colors?

    No – you may choose either a black LitterHopper and black Shield, or a white LitterHopper and white Shield.
  • How do I replace the Litter-Robot 4 Carbon Filter?

  • Litter-Robot 4 Shield FAQs

    How do I install the Litter-Robot 4 Shield?

    Easy—no tools required! Download the installation guide.


    Will my cat use the Litter-Robot 4 Shield?

    We suggest installing the shield as shipped with the flexible privacy flap unattached. This will allow your cat to become familiar with the new opening of their Litter-Robot 4. Once your cat is comfortable entering and exiting Litter-Robot 4, then it is time to install the privacy flap. 


    Can I still use the Litter-Robot 4 Ramp?

    Yes, the Litter-Robot 4 Ramp and the shield are compatible. This purchase includes a shield hinge that can be used to install the Litter-Robot 4 Ramp. Download the installation guide to see how to install the shield and the ramp.


    Can I use the Litter-Robot 4 Fence or Litter-Robot 4 Camera Mount?

    No, you will need to remove the fence and camera mount in order to install the shield.

  • Litter-Robot 4 LitterHopper™ FAQs

    How does the LitterHopper work?

    The Litter-Robot 4 LitterHopper is designed to automatically maintain the optimal Litter-Robot 4 litter level within the globe. The optimal litter bed level inside Litter-Robot 4 is at or just below the MAX fill line inside the globe. Litter-Robot 4 uses OmniSense® Detection to measure the height of the litter bed level at the end of each clean cycle. If the sensors determine that the litter bed level is below optimal, then the LitterHopper will dispense litter into the globe at the start of the NEXT clean cycle. Note: You must update your Litter-Robot 4 to the latest firmware version through the Whisker app before installing the LitterHopper. If you do not currently use the Whisker app, please download the app and update your firmware.

    Can I choose a LitterHopper color that’s different from the color I selected for Litter-Robot 4?

    No, the LitterHopper will match your selected Litter-Robot 4 color (black or white).

    Do the LitterHopper and Litter-Robot 4 ship separately?

    Yes.

    How do I install the Litter-Robot 4 LitterHopper and Bonnet?

    No tools are required: Download the installation guide to make sure you are willing to install this accessory.

    What type of cat litter can I use with the LitterHopper?

    We recommend using clay-clumping cat litter with Litter-Robot 4, although litter beads and crystals that are small enough to pass through the screen will also work. However, translucent or white-colored litter (most often seen in crystal litter) may impact the litter level and Drawer Full Indicator (DFI) accuracy.

    How much cat litter does the LitterHopper hold and dispense?

    The LitterHopper holds approximately 13 cups of cat litter. It dispenses roughly half a cup of litter at a time, for a total of approximately 25 dispenses. (Note: The LitterHopper does not dispense litter during every cleaning cycle, only when litter levels drop below optimal.)

    How do I know my LitterHopper™ is calibrated to optimal litter levels?

    When you initially enable the LitterHopper, ensure the litter level inside the globe is optimal: just below the MAX fill line. Whatever the litter level is when you enable the LitterHopper will automatically be set as the optimal litter level. This means your LitterHopper will not dispense until the litter reaches below that level.

    If you need to reset your optimal litter level, please reference the "Calibrate the optimal litter level" section in the   Litter-Robot 4: LitterHopper not dispensing support article.

    How many pounds of litter should be added to Litter-Robot 4 with the LitterHopper™?

    This depends on the type of litter you're using. For example, with the recommended standard-weight clay-clumping litter, approximately 17 pounds of litter is used when added to both the Litter-Robot 4 globe (just below the MAX fill line) and the LitterHopper.

    Will the Whisker app tell me when the LitterHopper is empty?

    Yes, the Whisker app will notify you when your LitterHopper is likely empty. The app closely monitors your litter bed level. If it detects a decreasing litter bed level trend over several cleaning cycles, the app will notify you that litter levels are getting low, indicating that the LitterHopper is likely empty. Please note: We are continuing to improve upon this feature; in some cases, the feature may not work as intended.

    Is the LitterHopper included in my Litter-Robot 4 WhiskerCare Warranty?

    The LitterHopper automatically includes a 1-year warranty, regardless of whether your Litter-Robot 4 is still under warranty, and is not eligible for coverage under our 3-year extended warranty.

    Is the LitterHopper anti-tip guard compatible with the Litter-Robot 4 Carpet Tray?

    Yes, they are compatible. The carpet tray includes a support extension for the anti-tip guard.

    Are there any special cleaning instructions?

    While cleaning your Litter-Robot 4, be careful that the LitterHopper key (the device used to direct litter from the LitterHopper into Litter-Robot 4) doesn’t fall out. Note that the key is designed to fit loosely in the globe, thus allowing the globe to rotate freely around it. We recommend regularly cleaning the LitterHopper dispensing area with a dry cloth or vacuum to avoid buildup of dust, loose litter, or clumps.

    Why didn’t the LitterHopper add litter to my globe?

    When you initially install the LitterHopper, you’ll need to start with a full bed of litter that is at or just below the MAX fill line. Litter will be added ONLY when needed and only at the start of the NEXT clean cycle. For further troubleshooting, visit our support portal.

    What do I do with my original Litter-Robot 4 Bonnet?

    Feel free to recycle or throw away your original bonnet. (Be sure to follow local regulations.) Or you can store it in the box your LitterHopper arrived in for safekeeping.

    Can I return the LitterHopper but keep my Litter-Robot 4?

    If you purchased the LitterHopper at the same time as your Litter-Robot 4, you will need to return your entire unit for a LitterHopper refund. We will then ship a standard Litter-Robot 4 to you.

    Weight-based ID disclaimer

    When Litter-Robot 4 is equipped with the LitterHopper, weight-based ID technology will not function for cats that weigh more than 25 pounds.

Convenient litter refills

The LitterHopper automatically dispenses fresh cat litter into your Litter-Robot 4, ensuring litter is at the optimal level for your cat’s use. See status and history on the Whisker app. 

person filling litterhopper

Keeps litter contained

Designed specifically for cats that love to kick and dig in their litter, the Litter-Robot Shield easily attaches to the front of Litter-Robot 4, adding a protective layer to keep the mess contained. 

tabby cat inside Litter-Robot 4 with Shield

 

Reviews displayed on this website may include reviews placed on other Whisker sites, including Litter-Robot.com and Litterbox.com. We pride ourselves on transparency and non-profanity. All reviews submitted to Litter-Robot.com and Litterbox.com are unedited.

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