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Rating:
LitterHopper®
As low as
$99
or
Another litter box chore bites the dust. Make your self-cleaning litter box self-refilling. The Litter-Robot 4 LitterHopper® refills litter to optimal levels, so you don’t have to. (Litter-Robot 4 not included.)
- Automatically refills Litter-Robot 4 with fresh litter
- Maintains the recommended litter bed level
- Holds up to 13 cups of litter
- Compatible with multiple litter types, including clay and silica*
- New bonnet included (installation required)
- Compatible with Litter-Robot 4 only
Check another chore off your list.
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Automatically refills litterConveniently refills fresh litter into your Litter-Robot 4.
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Maintains optimal litter levelsEnsures litter stays at optimal levels for your cats’ use and your peace of mind.
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Connects to the Whisker appStay in the know about the status of your LitterHopper.
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Works with multiple litter typesThe LitterHopper is compatible with most litters.
We’ll refill. You relax.
The LitterHopper automatically dispenses fresh litter into your Litter-Robot 4 globe, so you have one less thing to worry about.
Always-optimal levels. Total peace of mind.
The LitterHopper ensures litter stays at optimal levels, so your cat always has a clean place to go—and you can keep track through the Whisker app right from your phone.
Technical specifications.
Dimensions
| Motor power | 12 Volts |
|---|---|
| Height | 12.7” |
| Footprint | 22’’ x 28.8’’ |
| Weight with Litter-Robot | 26 lbs. |
What's included
| Litter-Robot 4 LitterHopper | 1 |
|---|---|
| Litter-Robot 4 Bonnet | 1 |
| Key | 1 |
| Anti-tip guard | 1 |
Litter‑Robot 4 LitterHopper
Litter-Robot 4 Bonnet
Key
Anti-tip guard
Assembly
No tools required: Check out our LitterHopper® Assembly Guide for further instructions.
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.
Frequently asked questions
How it works
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 default 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 during 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.
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.
Does the LitterHopper® work with any Litter-Robot model?
No, the Litter-Robot 4 LitterHopper® is only compatible with Litter-Robot 4.
How do I install the Litter-Robot 4 LitterHopper® and Bonnet?
No tools are required: Consult our installation guide or watch the LitterHopper installation video to make sure you are willing to install this accessory.
Features
Why do I need a new bonnet?
The standard Litter-Robot 4 bonnet isn’t designed to equip the LitterHopper. The new bonnet (included in this purchase) is required for the LitterHopper to function.
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.
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.
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.
Litter
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. Learn more about the best litter for Litter-Robot in our dedicated article.
How much cat litter does the LitterHopper® hold and dispense?
The LitterHopper holds approximately 13 cups of cat litter. The LitterHopper will dispense litter for up to 20 seconds per cycle. If the litter bed doesn't reach the optimal level in one cycle, the LitterHopper will continue to dispense in the next cycle until the optimal level is reached. (Note: The LitterHopper only dispenses litter when the litter level drops below the optimal level, not during every cleaning cycle.)
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.
Miscellaneous
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 during the NEXT clean cycle. For further troubleshooting, visit the Whisker 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.
* Shipping disclaimer
We offer free shipping to the contiguous United States on all orders of $49 or more. (Excludes Alaska, Hawaii, Puerto Rico.)
- 90-day in-home trial
- 1-year warranty
- Free shipping (ex. AK/HI/PR)
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