Litter-Robot 4

As low as £749
Only %1 left
Never scoop again. Litter-Robot 4 solves the litter tray problem with automatic, self-cleaning technology that quietly provides a fresh bed of litter after every use, and reduces odours and litter tracking. Join over 1 million Litter-Robot customers.
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Stop scooping cat litter, neutralize odours, 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 tray odours
  • Monitor litter tray usage right from your phone
  • Best litter tray 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: 40 cm x 40 cm
  • Weight (Empty): 10.9 kg
  • Footprint: 56 cm x 68.6 cm


  • 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 odour 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, odour 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 neutralise litter tray odours 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 maximise 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 tray odours 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 tray. 

  • 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. 

  • 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 WhisperQuiet™ 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.

  • Will Litter-Robot 4 eliminate litter tray odours?

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

  • 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 1.36 kg. Therefore, kittens that weigh less than 1.36 kg 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 tray 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 40 cm x 40 cm and interior globe dimensions of 40-43 cm H (depending on litter level) x 48.3 cm W x 45.7 cm 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-coloured 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.
  • What accessories are available for Litter-Robot 4?

    The Litter-Robot 4 has custom-fit accessories to enhance your experience. It includes a standard fence. 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 56 cm wide x 96.5 cm deep with the ramp installed. Without the ramp, it is 56 cm wide x 68.6 cm deep.

  • What is the WhiskerCare™ 2-Year Warranty?

    WhiskerCare™ is a comprehensive protection plan that covers your Litter-Robot from top to bottom for 2 years. 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 happens if there are other cats in the home without pet profiles using the Litter-Robot 4?

    When other cats without a pet profile use the Litter-Robot 4, weight readings will be seen as unhealthy data. When too many data points are classified as unhealthy, SmartScale will be turned off. If you are an individual or organization that fosters or rescues cats, you’ll need to set up a Pet Profile for each cat in order for SmartScale to function and filter data properly.

  • 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?

    Litter-Robot 4 orders typically ship within 1-3 days in the UK. *Litter-Robot 4 black units currently shipping in 1 week

  • 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 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” 

Never scoop again®

Litter-Robot’s advanced litter sifting technology quietly separates cat's waste from the clean litter, for a fresh bed of litter every time.

Maximum odour control

Neutralise cat litter tray odours with Litter-Robot 4's improved waste drawer sealing, carbon filters, and optional OdorTrap® System. Add OdorTrap® Packs to the integrated holder for enhanced odour 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.

  • Odour control

    Clumps automatically fall into a tightly-sealed drawer, keeping odours 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

Suitable for up to 4 cats and providing a clean litter tray after each use, Litter-Robot 4 is the best litter tray for multiple-cat households. Its wide opening maximises cat comfort for cats of any breed or size.

Cleaner paws, tidier home

Reduce litter dust and litter tracking out of the tray thanks to Litter-Robot's automatic litter-sifting technology and complimentary fence.

Save time and money

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

Quiet operation

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 size as a traditional large litter tray. No need to make space or elaborate installation plans.

Smooth transition

Over 96% of cat households successfully make the switch to Litter-Robot. If only your cat could talk!

Easy setup

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


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