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Litter-Robot® 4 LitterHopper Bundle
As low as $849 Regular Price $949
or
Litter-Robot 4 is the highest-rated automatic, self-cleaning litter box for cats. Say goodbye to scooping and refilling cat litter with the Litter-Robot 4 LitterHopper Bundle.
- LitterHopper® automatically refills Litter-Robot 4 with fresh litter
- Monitor visits, track weights, and get real-time updates that help you unlock smart insights with the Whisker® app
- Litter-Robot 4 equipped with LitterHopper® (ships separately)
- Waste Drawer Liners (25)
- GreatLitter (20 lb. bag - may ship separately)
- WhiskerCare® 3-Year Extended Warranty
Life-changing for you and your cat.
The tried-and-true Litter-Robot®.
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Never Scoop Again®Automatically sifts out waste after every use.
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Multi-cat friendlyWorks for up to 4 cats, removing the need for multiple boxes.
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Odor controlDirty clumps fall into a large capacity, tightly sealed, carbon-filtered waste drawer.
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Automatically refills litterConveniently refills fresh litter into your Litter-Robot 4.
For every cat. In every home.
Litter-Robot was designed to make life easier for every cat parent, made with every breed, size, and personality in mind. Simply the smart litter box for everyone.
All-in-one automatic litter box
With the Litter-Robot 4 LitterHopper Bundle, your cat always has a clean place to go and optimal litter levels. You’ll also get one bag of the best clay-clumping cat litter for Litter-Robot, 25 custom-fit waste drawer liners, and top-to-bottom coverage with our WhiskerCare® Extended Warranty.
Never Scoop Again®
Litter-Robot automatically separates clumps from clean litter, leaving your cat with a fresh bed of litter every time.
- Highest-rated self-cleaning litter box
- Go up to 8 days between emptying with a one-cat household
Convenient litter refills
The LitterHopper automatically dispenses fresh cat litter into Litter-Robot 4, ensuring litter is at the optimal level for your cat’s use.
- Holds up to 13 cups of litter
- Compatible with multiple litter types, including clay and silica*
Maximum odor control
The optional OdorTrap® System neutralizes litter box odors with its sealed waste drawer and carbon filter or OdorTrap® Packs.
- Advanced multi-layered carbon filtration system
- Add OdorTrap Packs to further neutralize litter box odors
Smart insights come standard.
The Whisker app is free, easy to use, and provides insights into your cat’s habits. With over 100,000 5-star ratings, the app keeps getting better with regular new features and updates. Whisker+ is an optional upgrade for even deeper insights.
Included with the free Whisker app:
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Weight-based cat identification
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Trended view of weight, visits, and cycles
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Daily usage and device status updates
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Yesterday’s visit duration
Upgrade to Whisker+ for:
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Daily recap report
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Time-of-day insights and duration trends
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Long-term trends up to 2 years
Smart. Sleek. Seamless.
Same footprint
as a traditional box.
as a traditional box.
Explore Litter-Robot in 360
See every angle of the Litter-Robot design.
Technical specifications
Dimensions
| Power | 15 Volt DC |
|---|---|
| Height | 29.5” |
| Footprint | 22’’ x 28.8’’ |
| Entryway | 15.75’’ x 15.75” |
| Weight with Litter-Robot | 26 lbs. |
What's included
| Litter-Robot® 4 | 1 |
|---|---|
| Litter-Robot 4 LitterHopper® | 1 |
| Power Supply | 1 |
| Fence | 1 |
| GreatLitter 20-lb bag | 1 |
| Waste Drawer Liners | 25 |
| WhiskerCare® 3-Year Extended Warranty |
Litter‑Robot 4
Litter‑Robot 4 LitterHopper
Power Supply w/ pet-safe cord
Fence
GreatLitter
Waste Drawer Liners
Extended Warranty
Setup
Litter-Robot comes fully assembled and ready to use—just add litter and plug it in. The unit is built modularly to simplify cleaning and ongoing maintenance. Learn more.
Reviews
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.
Which Litter-Robot is right for you?
Compare our self-cleaning litter boxes.
Frequently asked questions
Cat behavior
How can I get my cat to use Litter-Robot?
Over 95% of cats acclimate to Litter-Robot*, and most begin using it within a few days to a week. (*Based on stated reasons for customer returns of Litter-Robot 4 and 3 over a one-year period). It's natural for some cats to be initially uncertain or wary of new objects in their territory. Litter-Robot 4 is designed to be as cat-friendly as possible, featuring QuietSift® technology that minimizes noise during the cleaning cycle. The cleaning cycle won’t begin until minutes after your cat has exited the automatic litter box, and you can extend the delay up to 30 minutes for skittish cats.
To ease the transition, place Litter-Robot where the old litter box was and, for a short time, keep both nearby. Mixing a cup of used litter into the clean litter in the Litter-Robot helps provide a familiar scent. You can also leave Litter-Robot turned off until your cat has tried it. With these steps—and a little patience—most cats adapt quickly, especially if they’re already used to a covered litter box. Learn more about acclimating your cat.
To ease the transition, place Litter-Robot where the old litter box was and, for a short time, keep both nearby. Mixing a cup of used litter into the clean litter in the Litter-Robot helps provide a familiar scent. You can also leave Litter-Robot turned off until your cat has tried it. With these steps—and a little patience—most cats adapt quickly, especially if they’re already used to a covered litter box. Learn more about acclimating your cat.
Can large cats use Litter-Robot 4?
Litter-Robot 4 is suitable for cats that weigh 3-25 lbs, including large breeds like Maine Coons or Norwegian Forest cats, making it one of the best litter boxes for large cats. With an entryway width of 15.75’’ and an interior height of 16.5”, almost any domestic cat can fit comfortably inside the globe.
Can kittens use Litter-Robot 4?
Yes. Kittens that weigh at least 3 lbs can safely use Litter-Robot 4 in automatic mode. The unit uses laser and weight sensor technology to detect when your cat enters and exits the globe, which then triggers the countdown timer and cleaning cycle.
For kittens under 3 lbs, we recommend using your Litter-Robot in "semi-automatic" mode to keep your kitten safe and relieve you from litter box scooping. For "semi-automatic" mode, leave Litter-Robot powered off or unplugged. When you see your kitten has used it, wait about 7 minutes for the waste to clump, then power it on. Litter-Robot will automatically perform a clean cycle. Afterward, power it off again. Continue this supervised, semi-automatic mode until your kittens have reached 3 lbs and can reliably activate the weight sensors.
Features
Will Litter-Robot eliminate all litter box odors?
Because waste is promptly removed and contained in the base, typical litter box odors will be significantly reduced with Litter-Robot. Litter-Robot 4 features a sealed waste drawer and Carbon Filter to reduce odors. You can opt to combine the Carbon Filter with OdorTrap Packs to eliminate litter box odors through natural chemistry. We also recommend using an unscented, all-natural litter like GreatLitter to help with odor control.
What insights do I receive on the Whisker app with Litter-Robot 4?
With Litter-Robot 4, you’ll have access to a 7-day look at your cats’ visits and individual cat weights. Upgrade to Whisker+ for additional insights.
What insights do I receive with a Whisker+ membership?
If you upgrade to a Whisker+ membership with Litter-Robot 4, you will receive up to 2 years of your pets’ activity and history for deeper insights. This includes weight trends, visit trends, duration trends, historical data, daily recap reports, and device notifications. (*Duration tracking implemented in September 2025; no prior data history before September 2025.)
How it works
How often do I need to replace the Litter-Robot Waste Drawer Liner, Carbon Filter, or OdorTrap® Packs?
Replace the Waste Drawer Liner whenever you need to empty the waste drawer. How often you empty the waste drawer depends on the number and size of your cats. Thanks to Litter-Robot 4's large waste drawer, you may only need to empty the waste drawer as low as once every 8 days. For optimal odor absorption, we recommend replacing the Carbon Filter and OdorTrap® Packs every 2-4 weeks, but replacement frequency is up to you and your cats' usage patterns.
Does Litter-Robot require special litter?
The best litter for Litter-Robot is clumping clay litter. We recommend a high-quality, standard-weight, clay-based clumping litter, such as GreatLitter. Some silica gel litter beads and crystals can also be used with Litter-Robot, as long as they pass through the screen. However, translucent or white-colored litter (most often seen in crystal litter) may impact the litter level and Drawer Full Indicator (DFI) accuracy in Litter-Robot 4 and are therefore not recommended. Alternative, plant-based litters typically do not work with Litter-Robot as these may not be filtered properly through the sifting system. Litters that do not work in Litter-Robot are the strictly absorbent, non-clumping or loose-clumping litters, newspaper-based litters, and absorbent wood pellet litter.
Can Litter-Robot 4 be used on carpet or uneven surfaces?
Yes. However, SmartScale® technology to record cat weight is most accurate on a firm surface, not carpeting. If you plan to use Litter-Robot 4 on carpet that's 3mm+ thick or on uneven flooring, you can improve the accuracy of SmartScale® weight readings by purchasing our specially designed Carpet Tray that sits between the unit and the floor. The Carpet Tray is not required for Litter-Robot 4 to function.
How do I set up my Litter-Robot?
Visit our Getting Started page to view our online setup guide (including tips to acclimate your cat), the user manual, and accessory installation guides.
Litter-Robot 4 LitterHopper® FAQs
Visit our Litter-Robot 4 LitterHopper page to view frequently asked questions.
Customer service
If I am not satisfied with my Litter-Robot, how do I get a refund?
Buy with confidence knowing that your investment is backed by our 90-day in-home trial. If you or your pet are not satisfied with your robot appliance, simply return it for a refund of the purchase price. You only have to pay return shipping. If you have purchased your robot appliance through a source other than Litter-Robot.com, you must coordinate the return with that source and according to their product return policy. Visit our Returns page for more information.
What is the WhiskerCare® Warranty?
WhiskerCare® is a comprehensive protection plan that covers your Litter-Robot from top to bottom for 1 year at no cost. A 3-year extended plan is included with most bundles, or you can purchase an extended plan. Our hassle-free plan covers accidental damage, power surges, mechanical and electrical breakdowns, and software support. You’ll have access to our dedicated customer experience specialists, software experts, and US-based service and repair team. During your warranty period, we will resolve robot issues at no charge, including free shipping both ways. There are never deductibles or hidden fees.
Where does Litter-Robot ship from?
Litter-Robot ships from our assembly and fulfillment center located in Juneau, Wisconsin.
* Shipping disclaimer
We offer free shipping to the contiguous United States on all orders of $49 or more. (Excludes Alaska, Hawaii, Puerto Rico.)
Laser compliance statement
Complies with FDA performance standards for laser products except for conformance with IEC 60825-1 Ed. 3., as described in Laser Notice No. 56, dated May 8, 2019. CLASS 1 LASER PRODUCT. Patents - https://www.WhiskerIP.com | whisker.com
- 90-day in-home trial
- Free shipping (ex. AK/HI/PR)
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