Dimensions: 27 x 22 x 29.5 inches | Wi-Fi Enabled: Yes, with the app
Litter Type: Any litter type | Level of Odor Control (1 to 5): 4.5

The Whisker Litter-Robot 4 is a generously sized cat litter box packed with remarkable features, including a night light and a sleek interface. It also features a step and fence that helps reduce litter tracking when your cat leaves the box. With its wide opening, cats can easily access the box, making it a pleasant place to do business.

The Litter-Robot’s automatic cleaning system is hassle-free and seamless, which is why most owners rave about it. The box accommodates up to four cats, and you can monitor their habits from your phone. Plus, both the Litter-Robot 3 and 4 should cope with a range of litter types, including clumping, clay, and crystal litter. 

Users have reported that the Whisker Litter-Robot 4 is incredibly easy to set up and use: simply add litter and plug it in. Its intuitive user interface and thoughtful features make it an excellent purchase for those who value convenience.

Note: The litter’s odor-reducing properties may not be as effective toward the bottom waste container, leading to an unpleasant smell when cleaning time is a few days away.

What We Like:
• Excellent reviews
• Wide, circular opening for larger cats
• Monitors your cat’s toileting habits and provides health insights
• Easy to clean 
• Robust design
• Suitable for kitties of all sizes

What We Don’t Like: 
• The learning curve is steeper compared to other products

Dimensions: 27 x 21 x 20 inches | Wi-Fi Enabled: Yes, with the app | Litter Type: Any clumping litter | Level of Odor Control (1 to 5): 4

INSTACHEW PURRCLEAN litter box has a unique app that enables owners to set the cleaning cycle after every use or on a schedule. Additionally, cat owners can receive real-time updates on when their cat has used the litter box, and the box sends a notification when it’s full. 

The intelligent litter box can detect when a cat approaches and turns off to avoid mishaps. Refilling the litter tray is a breeze, thanks to refillable bags. When it comes to maintenance, you’ll need the litter out once a week, although the frequency may vary depending on the number of cats using it.

Although some users may find the monitoring feature excessive, it can be immensely valuable for cat owners prone to cystitis or blocked bladders. Changes in the cat’s toileting habits can indicate cystitis, prompting you to visit your vet for a checkup.

What We Like:
• Monitor litter box use and manage automatic instant cleaning via the app
• Wi-Fi enabled
• Easy assembly

What We Don’t Like:
• It takes up a lot of space
• Some owners found the app tricky to use
• Works only with clumping litter

Dimensions: 26.4 x 17 x 6.6 inches | Wi-Fi Enabled: No | Litter type: Any clumping litter or crystals | Level of Odor Control (1 to 5): 3

Pet Zone Smart Scoop litter box is a bargain hunter’s favorite, thanks to its affordability and reliability. While it may not have all the bells and whistles of its more pricey counterparts, it still does the job without taking up too much space in your home.

You can choose between clumping litter or crystals, and the cleaning cycles are designed to minimize litter wastage. Plus, each purchase includes a carbon filter that effectively neutralizes odors. 

This self-cleaning litter box is perfect for pet owners who want an easy and efficient solution. The sturdy design and simple-to-clean materials make it a practical choice that eliminates litter box cleaning hassle.

What We Like:
• Inexpensive
• Compact size; great for smaller homes
• Touch-free cleaning

What We Don’t Like: 
• It is pretty noisy
• Plug-in only
• No Wi-Fi option
• The litter may clog the scoop occasionally

Dimensions: 23.62 x 23.62 x 27.95 inches | Wi-Fi Enabled: No | Litter Type: Clumping litter only | Level of Odor Control (1 to 5): 4

If you’re looking for a hassle-free litter box, check out CATLINK’s Robot Litter Box. Unlike other advanced litter boxes, you don't need to connect it to Wi-Fi or install complicated software. Just plug it in and let your cat use it. 

CATLINK gives top priority to your cat’s safety and comfort. It has various sensors, a panel lock, and a sturdy structure that prevents accidents and injuries. The litter box has a barrier that reduces litter tracking, and the toilet is placed a safe distance from the entrance. 

With CATLINK’s Robot Litter Box, you don't have to worry about controlling every aspect of your cat’s litter box from your phone. It’s a simple yet effective solution that makes a cat owner’s life effortless.

What We Like:
• Quiet operation
• Can go two weeks between cleanouts
• Plenty of safety features
• Low odor
• It doesn't take up too much space

What We Don’t Like:
• Only compatible with clumping litter
• No Wi-Fi control or app

Dimensions: 24.41 x 21.65 x 20.87 inches | Wi-Fi Enabled: Yes, with the app | Litter Type: Clumping litter only | Level of Odor Control (1 to 5): 4

PETKIT PURAMAX is a large-capacity litter box designed for multi-cat households. It is large enough for most cats and safe for kitties weighing up to 17 pounds.

There is an air purifier and tight seal on the extra-large waste bin, which helps to keep any foul smells to a minimum. Although some users have reported that smells can build up over time, most are satisfied with the level of smell control provided. 

Since the door is relatively low to the ground, this may be an excellent option for owners of senior cats or those with mobility issues. Meanwhile, the app is super handy, allowing you to customize cleaning cycles and give you insights into litter usage. 

What We Like:
• Efficiently reduces bad odor
• App-enabled
• 11 precision sensors for extra safety
• Clear instructions
• Easy to clean

What We Don’t Like:
• Not suitable for use with crystal litters
• Can’t be used on top of carpets, as this interferes with the sensors
• Some users reported litter leakages while cleaning

Dimensions: 27.56 x 19.1 x 15.62 inches | Wi-Fi Enabled: No | Litter Type: Crystal litter | Level of Odor Control (1 to 5): 4.5

The PetSafe ScoopFree litter box is a top-performing, highly-favored pick among many pet owners. It’s a budget-friendly option with a range of features and unparalleled reliability. 

The box comes with disposable crystal litter that lasts up to 30 days, and the disposable trays mean that you don't have to deal with any mess—you can simply dispose of the whole tray. This feature isn't only hygienic but also helps to prevent the spread of infectious diseases.

The best part: The PetSafe litter box does a fantastic job of keeping unpleasant odors at bay. The litter is raked just 20 minutes after your cat leaves, making it remarkably efficient.

What We Like:
• Minimal smell
• No touch cleaning
• No need to plug in to use an app

What We Don’t Like:
• Crystal litter can be more expensive in the long run
• Not every cat likes crystal litter