Litter-Robot 4

As low as $699
Only %1 left
Never scoop again. Litter-Robot 4 solves the litter box problem with automatic, self-cleaning technology that quietly provides a fresh bed of litter after every use, and reduces odors and litter tracking. Join over 1 million Litter-Robot customers.
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Stop scooping cat litter, neutralize odors, and give your cat a clean litter bed every time with Litter-Robot 4, the highest-rated automatic litter box on the market. Elegantly designed to maximize comfort for kittens and large cats alike, Litter-Robot 4 features cutting-edge litter-sifting technology that separates your cat’s waste from the clean litter after each use. Reduce litter tracking, and monitor litter and waste levels in real-time with the Whisker app. Stay on top of your cat’s health with smart insights about your cat’s weight and litter usage.

  • Never scoop again®
  • Drastically reduce litter box odors
  • Monitor litter box usage and track weight in app
  • Best litter box for multiple cats: one supports up to 4 cats
  • Includes a fence, step, and carbon filter
  • Add a Carpet Tray to use Litter-Robot 4 on any surface


Litter-Robot 4 front tech specs
Litter-Robot 4 side tech specs
  • Power: 15 Volt DC
  • Entryway: 15.75’’ x 15.75”
  • Weight (Empty): 24lbs.
  • Footprint: 22’’ x 27’’


  • What makes Litter-Robot 4 different from other self-cleaning litter boxes?

    Litter-Robot 4 is the latest evolution of the highest-rated WiFi-enabled, automatic, self-cleaning litter box for cats. With over 20 years of customer feedback driving product innovation, Litter-Robot 4 features new sensor and litter-sifting technology for enhanced odor control, cat safety, and real-time tracking of waste and litter levels through the Whisker app.

  • How does Litter-Robot 4 compare to Litter-Robot 3 Connect?

    Core features of Litter-Robot models have always included a patented sifting system, odor management, multi-cat design, cat safety features, and easy-to-clean modular components.  The new Litter-Robot 4 advances these core features with the latest technology, including the optional OdorTrap® System to neutralize litter box odors and the SafeCat System with OmniSense® Detection for enhanced safety and real-time tracking of waste and litter levels. Litter-Robot 4 also features a QuietSift® cleaning cycle, an enlarged waste drawer, and a wider opening to maximize cat comfort. Learn more with our Litter-Robot 3 Connect vs Litter-Robot 4 comparison guide.

  • Why is Litter-Robot the highest-rated self-cleaning litter box in the world?

    We invest in engineering and American assembly operations to ensure that we deliver the best to pet parents worldwide! With tens of thousands of reviews rating Litter-Robot five stars, cats and cat parents alike love the product. Cat parents love that Litter-Robot reduces or even eliminates litter box odors throughout their home, that they're buying less litter thanks to the efficient clean cycle, and that they finally have freedom from scooping the litter box. 

  • Will my cat be scared of Litter-Robot 4?

    We estimate that over 96% of cat households acclimate to Litter-Robot. It's natural for some cats to be initially uncertain or wary of new objects in their territory. However, many cats use Litter-Robot within several days to a week of setting it up.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 will only begin minutes after your cat has exited the automatic litter box. You can also set the cleaning cycle delay to as long as 30 minutes, which may better suit skittish cats. With a little patience and encouragement, most cats will quickly adapt to Litter-Robot 4.

  • How can I help my cat get used to Litter-Robot 4? 

    Getting your cat acclimated to Litter-Robot is very easy. The trick is to ease your cat into transitioning to Litter-Robot. You can avoid startling your cat by leaving Litter-Robot switched off until you notice your cat has used it. We recommend that you place Litter-Robot in the same location as the old litter box. You can leave the old litter box near Litter-Robot for a short time. Take a cup of litter from the old litter box and add it to the clean litter in Litter-Robot. The scent will be familiar, and your cat should be inclined to check it out. Learn more about acclimating your cat.

  • Is Litter-Robot 4 safe for my cat? 

    Yes, Litter-Robot was designed with your cat’s safety in mind. If your cat tries to enter the globe while it is rotating, Litter-Robot will stop immediately. Litter-Robot 4 features enhanced safety technology known as the SafeCat System with OmniSense® Detection that uses lasers to continuously analyze four safety zones, weight sensors, and anti-pinch software for enhanced cat detection.

  • Do the bezel patterns of the product match exactly with the images on the website?

    While we strive to accurately represent our product's colors and bezel patterns on our website, please note that due to differences in monitors and lighting conditions, the actual bezel patterns may vary slightly in person and there may be subtle variations in the final product.

  • Will Litter-Robot 4 eliminate litter box odors?

    Litter-Robot 4 features an optional OdorTrap® System designed to neutralize litter box odors. This system  uses the combination of a sealed waste drawer and carbon filter to reduce odor. You can opt to replace the carbon filter with OdorTrap® Packs to eliminate litter box odors through natural chemistry. Most users suggest that Litter-Robot drastically reduces and or even eliminates litter box odors. 

  • Can kittens use Litter-Robot 4?

    Yes. Litter-Robot 4 uses laser and weight sensor technology to detect when your cat enters and exits the globe, which triggers the countdown timer and cleaning cycle. The SmartScale® will not recognize kittens that weigh less than 3 lbs. Therefore, kittens that weigh less than 3 lbs can use Litter-Robot 4, but not in automatic mode. Until they weigh enough, 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 gained sufficient weight to activate the SmartScale®.

  • Does Litter-Robot 4 have a weight limit?

    No, Litter-Robot 4 does not have a weight limit. With entryway dimensions of 15.75"H x 15.75"W and interior globe dimensions of 15"-17"H (depending on litter level) x 19"W x 18"D, almost any domestic cat can fit comfortably inside the globe. 

  • Does Litter-Robot 4 require special litter?

    No, Litter-Robot 4 does not require special litter. Litter-Robot works well with almost any clumping or scoopable litter. 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. Litter-Robot is not compatible with litters that are strictly absorbent, non-clumping, loose-clumping, newspaper-based, or wood-based pellets. We suggest all-natural GreatLitter® for Litter-Robot

  • What accessories are available for Litter-Robot 4?

    The Litter-Robot 4 has many custom-fit accessories to enhance your experience. It includes a standard fence, but you can purchase the  Mini Fence  if you'd prefer a smaller fence. You can also install a webcam of your choice for better visibility into kitty's bathroom habits using the  Litter-Robot 4 Camera Mount . If your Litter-Robot 4 sits on carpet and you want to improve the accuracy of SmartScale® weight readings, try the Litter-Robot 4 Carpet Tray . Check out odor control components such as  OdorTrap® Packs  or  Litter-Robot 4 Carbon Filters  too!
  • Can I use any type of bag in the waste drawer?

    Yes, you can use any bag that fits in the waste drawer. However, please note that waste level readings may be inaccurate when using a dark bag, especially when the drawer is empty. As clumps start to collect in the drawer, the readings will become more accurate. For the most precise waste drawer readings and a seamless experience, we highly recommend using Litter-Robot Waste Drawer Liners.
  • Can I purchase a ramp for Litter-Robot 4? What does Litter-Robot 4 measure with the ramp installed?

    Yes, you can purchase the Litter-Robot 4 Ramp in black or white. The Litter-Robot 4 footprint measures 22"W x 38"D with the ramp installed. Without the ramp, it is 22"W x 27"D.

  • What is the WhiskerCare™ 1-Year Warranty?

    WhiskerCare™ is a comprehensive protection plan that covers your Litter-Robot from top to bottom for 1 year. An extended plan is available for purchase. 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 Litter-Robot issues at no charge, including free shipping both ways. There are never deductibles or hidden fees. 

  • What occurs if I buy a color bezel and need a future replacement, warranty, or just want another robot?

    All color options are covered under warranty. However, please note that colors may be phased out over time. If you require support for a color bezel unit that is no longer carried, you'll have the option to choose from our current available color offerings.

  • Can I use the app with both iOS and Android?

    The Whisker app is compatible with Apple mobile devices with iOS 13.0 or greater and Android devices 8.0 or greater. Both the iOS app and the Android app are available to download.

  • Can I connect the app to multiple Litter-Robots?

    Yes. You can onboard multiple WiFi-enabled Litter-Robots to the same app. If others in your household want to use the app, they can simply download the app to their device and log in with the same account.

  • Will Litter-Robot 4 connect to my WiFi network?

    Litter-Robot 4 requires a 2.4 GHz WiFi signal and IPv4 or IPv6 addressing (5 GHz band not supported). To connect to a shared network (apartment complexes, college dorms, etc.) provide your unit’s MAC address shown on the QR code sticker to the shared network administrator.

  • When will my Litter-Robot 4 ship?

    Please view our Litter-Robot 4 shipping schedule

    Your order will be prioritized in our queue based on your order date. You can reference your order confirmation email if you’re unsure of your order date. You will also receive email confirmation when your unit ships.

  • 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, level surface, not carpeting. If you plan to use Litter-Robot 4 on carpet or uneven flooring, please purchase our Carpet Tray accessory. This will sit between the unit and the floor and improve the accuracy of SmartScale® weight readings when on carpet or uneven surfaces. 

  • How do I update my firmware? 

    The Litter-Robot 4 is able to receive over-the-air firmware updates as Whisker releases new functionality and enhancements. You'll need to update your firmware manually within the Whisker App. You can visit here for detailed steps.

  • Why does my Litter-Robot 4 firmware automatically update, and can I opt-out?

    To ensure that Litter-Robot 4 customers always enjoy the latest features and improvements, we will now automatically update the firmware on your robots as soon as a new release becomes available. If you do not wish to receive these updates, you can choose to opt-out using the Whisker App with the following steps:
    1. Tap Robots in the bottom navigation bar
    2. Select your Litter-Robot 4
    3. Tap the settings icon in the top right corner
    4. Tap ‘Firmware Updates’
    5. Turn off the toggle for ‘Automatic Updates’
    If you disable Automatic Updates and then want to update your firmware manually, you can follow the provided Firmware Update Instructions. For additional details, please refer to our Terms and Conditions.
  • User Manual

  • How is Scoops Saved calculated?

    For each cycle, the tracker increments the Scoops Saved count by one, estimating the total number of scoops you’ve avoided. The count may vary with the occasional cycle that does not scoop litter or cycles that clean up multiple cat bathroom visits, but on average, each cycle represents one scoop saved!

  • My Scoops Saved number doesn’t look right; what can I do?

    If your scoops saved doesn’t look right you can reset it back to zero by navigating to your robot settings screen and clicking the option to reset your scoops saved. Please note resetting your scoops saved cannot be reversed!

  • If I already have an account on, do I have to log in again when using the app to make purchases?

    We offer single sign-on, which means you will be automatically signed into your account when using the app. Both accounts will synchronize automatically. That being said, if you set up your app account and account using different email addresses, this single sign-on will not work.

  • How do I access my orders and subscriptions from in the App?

    You can access your orders and subscriptions from the App’s bottom navigation bar in the new “Account’’ tab.

  • Can I pause my active subscriptions in the app?

    Yes, you can pause any of your active subscriptions for up to a year. To do this, tap on the “Account” tab in the bottom navigation bar, then “Subscription Management” and then “Edit Subscription”.

  • How can I stay informed about my Litter-Robot's status and usage?

    The Whisker app sends helpful notifications regarding the status of your Litter-Robot 4. These messages relate to robot usage, robot errors, and software updates. We recommend keeping these messages turned on, as they provide information about:  

    • Robot usage: Drawer full, litter low, clean cycle complete, clean cycle interrupted, cat detected, and more. 
    • Robot errors: Critical alerts for hardware failures or operational issues, including motor fault, cat sensor fault, pinch detect fault, over torque fault, position fault, bonnet removed, dirty laser, and more. 
    • Software updates: Notice of when your robot’s firmware has been updated with a link to the release notes to learn what’s new.
  • Can I opt out of marketing push notifications in the app?

    We recommend staying opted in to marketing notifications to be informed about the new products, accessories, and promotions that may interest you and your fur family. If you don’t wish to receive these updates, you can opt out within the Whisker app: 

    • Tap Account in the bottom navigation bar
    • Tap Notifications in the settings section
    • Toggle off “Marketing Push Notifications” 
  • 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?


    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.)

    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.

    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.

Never scoop again®

Litter-Robot’s patented sifting process quietly separates cat's waste from the clean litter, ensuring a fresh bed of litter for every use.

Maximum odor control

The optional OdorTrap® System neutralizes litter box odors with its improved waste drawer sealing and carbon filter. Add OdorTrap® Packs to the integrated holder for enhanced odor control.

  • Self-cleaning

    Sifts out waste after every use so you never have to scoop again.

  • Pet monitoring

    Track your cat’s weight with SmartScale®, follow their bathroom usage and get waste level alerts.

  • Odor control

    Clumps automatically fall into a tightly-sealed drawer, keeping odors at bay.

  • Multi-cat friendly

    One Litter-Robot is suitable for up to four cats–removing the need for multiple boxes.

The smartest litter box

Multi-cat friendly

Litter-Robot 4 is the best litter box for multiple-cat households, featuring a wide opening to maximize cat comfort and providing a clean litter box for up to 4 cats of any breed or size. 

Convenient refills

The LitterHopper (available as an add-on purchase) automatically dispenses fresh cat litter into Litter-Robot 4, ensuring litter is at the optimal level for your cat’s use. Say goodbye to another litter box chore!

Litter-Robot 4 with Litter-Hopper conveniently refills your Litter-Robot

Save time and money

Get time back every day by not scooping and using up to 50% less cat litter.

Quiet cleaning

QuietSift® self-cleaning cycles benefit skittish cats (and won’t wake you up at night).

Intuitive design

The control panel features 5 buttons and an LED display for easy operation.

Compact size

Same footprint as a traditional large litter pan. No need to make space or elaborate installation plans.

Smooth transition

Many cats acclimate within a week. If only they could talk, they’d tell you how great it is.

Easy setup

Use any clumping cat litter and regular trash bag. Or dream big—add some of our custom accessories.

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