A Cat Lady’s Honest Review of Whisker’s Litter-Robot 4 (and How to Save Some Big Bucks on It) (2024)

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Never scoop poop again

A Cat Lady’s Honest Review of Whisker’s Litter-Robot 4 (and How to Save Some Big Bucks on It) (1)

By Sarah Ashley

Published Feb 28, 2024

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  • Value: 18/20
  • Functionality: 20/20
  • Quality & Ease of Use: 20/20
  • Aesthetic: 19/20
  • Cat Approval: 18/20

TOTAL: 95/100

Since theLitter-Robot 3 Connectchanged my life (no, seriously, just readmy full review), I was ecstatic to try Whisker’s newest model, the Litter-Robot 4 ($699). Just like the original, the updated version is an automatic self-cleaning litter box that connects to WiFiso I can track all of my cats' comings and goings conveniently via app.My two cats have happily used their first Litter-Robot since December 2021. Even though they were comfortable with it, I worried switching things up might disrupt their routine. But here we are, more than a year later, and they're still obsessed with their Litter-Robot 4.

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So, of course, I couldn't gatekeep theappliance's impressivebundle dealscurrently up for grabs. For a limited time, you can save $50 on a ton ofLitter-Robot'smost coveted packages (includingthis 3-year warranty bundle,$799; $749orthis starter bundle,$939; $889), which have everything you need to start using it like a pro. Read on for my honest review of theLitter-Robot 4,which, spoiler alert: I love—and I’ll tell you why.

First, What Makes Litter-Robots Special?

Litter-Robots automatically scoop cat poop for you. To do this, they rotate and drop any clumps into a waste bin at the bottom of the machine. Not only does this self-cleaning litter box save you the hassle of scooping, but it cuts back on litter use, litter dust and litter smell. It also has an app that sends updates and allows you to monitor the box from afar.

Litter-Robot 4 vs. Litter-Robot 3

Litter-Robot 4

  • Pro: Suitable for up to 4 cats
  • Pro: Cat detection sensor prevents cleaning cycle with a cat inside
  • Pro: Customize the cycle timer
  • Pro: Advanced odor control
  • Pro: Much quieter when cycling—almost unnoticeable
  • Pro: More data tracking available in the app
  • Pro: Spacious interior
  • Pro: Wide entrance
  • Con: Large, though the design is sleeker than the Litter-Robot 3

Litter-Robot 3

  • Pro: Suitable for up to 4 cats
  • Pro: Cat detection sensor prevents cleaning cycle with a cat inside
  • Pro: Customize the cycle timer
  • Pro: Odor control
  • Pro: App tracking for cat habits and waste levels
  • Pro: Spacious interior
  • Con: Narrow entrance
  • Con: Noticeable sound when rotating during cleaning cycle
  • Con: Large, clunky machine

Improved Data and Notifications

I set up the Litter-Robot 4 one night when I was home to ensure a smooth transition between models. Please make sure your cats aren’t around during the bot’s first cycle! This absolutely freaked out my cats with Litter-Robot 3 and can destroy their sense of safety around litter boxes in general. Luckily, my babies are curious and gave it a go once they got used to the noise.

Worried they might hate the new machine, I was thrilled to see cycle notifications pop up on my phone the next day while at work. Not only did I know my cats were using the Litter-Robot 4, but I got some great intel. This model tells you how much your cat weighs (at least it told me that Jacques needed to go on a diet because he was two pounds heavier than his vet recommended!), how full the waste drawer is and how high the litter level reaches. Dubbed SmartScale™ technology and OmniSense™ Detection respectively, these features are so helpful to those of us back in offices with less time to monitor our litter box status. When my waste drawer is 60 percent full and my litter level is low, I know I need to add more as soon as I get home.

While Whisker’s individual cat recognition technology wasn't available when I first got mine, I still knew both of my cats used the Litter-Robot 4 based on the SmartScale™ technology. Foxy was four pounds lighter than Jacques, and each weight showed up in the activity history. If they weighed the same, I probably wouldn’t be able to tell who was using it when. It’s also worth noting you should check out what’s in the waste drawer every day. Even if you’re not scooping, you need to know what’s going on with your cat’s poop and pee. Dog owners literally pick up dog poop. We can at least check in on our cat’s poop to note whether they’re having healthy bowel movements.

Upgraded Performance

The Litter-Robot 4’s QuietSift™ technology is said to be “near-silent,” and I fully vouch for that description. The first time the robot cycled I wondered if it was working because it was so sneaky quiet! We used to be able to hear it humming from down the hall, and now I don’t know the cats have used it until I get the notification. This will be especially good news for folks with cats who spook easily at loud noises.

Beyond the reduced decibel level, the weight sensors are more sensitive to kitty paws—at least it seems that way to me. The Litter-Robot 3 Connect definitely has a SafeCat system that prevents cycling while a cat is in the box. But the Litter-Robot 4 seems to sense even a slight paw on the step and stops any action to prevent injuring or scaring cats.

Bigger Entrance, Smaller Size, Prettier Design

Whisker says both models weigh the same and have the same depth. To me, this new model feels significantly smaller—in a good way. It doesn’t look as bulky, and the design is much sleeker. The Litter-Robot 4 is a few inches narrower, though the entrance for kitties is way larger, almost 16” x 16”, a full five inches wider than the previous version. Not only that, but the step is slightly lower to the ground and the box entrance itself is about an inch lower, making it easier for cats to climb in.

The waste drawer is also larger and better contains smells. Again, at first glance, this fooled me. Because the unit’s base is designed to take up less space (yay!), the waste drawer looks smaller (why?). Au contraire! The drawer holds just as much as before because it’s deeper. Whisker offers an add-on OdorTrap™ System pod that can help reduce any stinky scents, though we’ve had no issues with smells thus far.

Another huge design improvement? The buttons are on the top of the bot instead of at eye (and nose) level with the litter. Instead of squatting down to hit reset after cleaning the waste drawer, I just lean in a bit (if you’re 6’7” this doesn’t matter much, but it does to me!). I also love how the button panel lights up to indicate what’s going on with the machine. Is the drawer full? Flashing blue light. Is there a cat inside? Red light. Did I successfully put it into sleep mode? Purple light (yes).

Set-Up Is a Cinch

Thequick-start guidewas all I needed to get the Litter-Robot 4 up and running in about ten minutes. (Huge tip: Plug the adapter into the back of the machine before positioning it and pouring litter into it.) I consider myself a semi-tech literate human being and the instructions were intuitive and easy to follow, and I'm not the only one who thinks so. On a new episode ofTesting TikTok, PureWow content creator Kate Kesselman also tried out the viral Litter-Robot 4, and as she mentioned, "The robot comes completely assembled," so the setup process should be the least of your worries.

Litter Robot

Bottom Line

The thing about cats is you’ll always have to deal with litter. You may not need to scoop the Litter-Robot 4, but you’ll have to empty the drawer and check out its contents. While this machine’s fence step is designed to trap litter, and it does, there’s still litter pellets around the box area.

This is still a very pricey piece of hardware. Yes, it ships free, and you have a 90-day in-home trial period—and I’ll say, over time, we definitely save on how much clumping litter we buy. But it’s expensive. Compared to other robotic litter boxes though? I think that price is worth it, especially if you buy it on sale in a bundle right now. Remember, your goal is to provide a happy, healthy home for your feline family member, and that includes a litter box they’ll use and feel safe in. And this just may be everything they "dreamed" of, so go ahead and add it to your cart, and you most likely will have no regrets.

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A Cat Lady’s Honest Review of Whisker’s Litter-Robot 4 (and How to Save Some Big Bucks on It) (7)

Sarah Ashley

Freelance Writer

Sarah Ashley is a Chicago-based freelance journalist. She has covered pets for PureWow for six years and tackles everything from dog training tips to the best litter boxes. Her...

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A Cat Lady’s Honest Review of Whisker’s Litter-Robot 4 (and How to Save Some Big Bucks on It) (2024)

FAQs

How much litter do you save with a Litter-Robot? ›

After your cat uses it, Litter-Robot sifts out only the dirty clumps, leaving behind the clean bed of litter for the next use. This cleaning process is so efficient that customers report saving up to 50% on cat litter!

Can you use wood pellets in a Litter-Robot? ›

Alternative, plant-based litters may also work, but these tend to form looser clumps that can cause condensation in the waste drawer. The Litter-Robot is not compatible with litters that are strictly absorbent, non-clumping, loose-clumping, newspaper-based, or wood-based pellets.

What happens if you put too much litter in Litter-Robot? ›

If there is too much litter in the globe, it can cause cycling issues (getting stuck during a cycle).

How to save on Litter-Robot 4? ›

By bundling with a litter refill subscription, our cleaning products, or the extended warranty, you save up to $50 on your purchase. Build your own bundle or check out our most popular Litter-Robot bundles for additional savings.

How often should I completely empty my Litter-Robot? ›

As a rule of thumb, one cat using Litter-Robot 3 requires that the drawer be emptied once per week; two cats, twice per week; three cats, every other day, and so on.

What kind of litter lasts the longest? ›

Silica gel tends to last longer than clay litter and is easier to dispose of than clay.” And then, there are eco-friendly litters made from natural materials like corn, walnuts, pine shavings and paper, which are biodegradable and compostable.

How can I reduce the cost of cat litter? ›

The 6 Ways to Save Money on Cat Litter
  1. Take Advantage of Auto-Ship Programs. Several online retailers offer auto-ship programs that make it easy to save on all sorts of pet care products. ...
  2. Use Social Media to Find Deals and Sales. ...
  3. Sign Up for Mailing Lists. ...
  4. Comparison Shop. ...
  5. Use Less Litter. ...
  6. Buy in Bulk.

How often should you fully replace cat litter? ›

If you use a clumping litter, it's best to scoop the box daily and change it out completely at least monthly. If you have more than one cat, it may be best to change the cat litter more often, every 2-3 weeks.

How much litter to put in Litter-Robot 4? ›

Fill the Globe through the circular opening with clumping litter until it meets the raised MAX Fill Line when spread flat—approximately 8-10 pounds (3.6-4.5 kg) by weight or 1 gallon (4L) by volume. Be careful not to overfill the Globe. The Litter-Robot litter sifting system requires clumping litter to work properly.

Is one Litter-Robot enough for 2 cats? ›

In fact, one Litter-Robot is suitable for up to four cats.

All you have to do is empty the waste drawer when indicated and add litter as needed. For a household with one cat, that's about every 7-10 days.

Does Litter-Robot 4 work without WiFi? ›

Litter-Robot 4 requires a 2.4 GHz WiFi signal and IPv4 or IPv6 addressing (5 GHz band not supported). * SmartScale™ technology to record cat weight is most accurate on a firm surface, not carpeting.

Can I use crystal litter in a Litter-Robot? ›

Litter-Robot's litter sifting system requires clumping litter. Litter beads and crystals that are small enough to pass through the screen will also work.

How often should I change the Litter-Robot filter? ›

For optimal odor control, we recommend changing the filter every three months. If you use scented litter, change the filter more frequently, as it will also absorb the fragrance. Replacement Carbon Filters can be ordered at www.litter-robot.com.

Does the Litter-Robot use less litter? ›

Litter-Robot's patented sifting system is more efficient and saves money by using up to 50% less litter. That means more pocket money to spend on your furry family members! With Litter-Robot, you'll know those paws encounter a clean bed of litter every time.

Do I need 2 litter robots for 2 cats? ›

In fact, one Litter-Robot is suitable for up to four cats.

For a household with one cat, that's about every 7-10 days. For multiple cat households, that's about once per week! No more time wasted bent over scooping litter box after litter box!

Does the Litter-Robot use a lot of electricity? ›

Does Litter-Robot use a lot of electricity? The Litter-Robot does not consume a lot of electricity. It uses only 2.7 watts of electricity when rotating the globe as it deposits the waste into a drawer below the unit.

How long does litter last in Litter-Robot? ›

Even if the box looks fine and your cat is using it without issue, regular maintenance is important, and the litter should be changed every 2-4 weeks, depending on your household.

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