10 Best Cat Litter Boxes 2026 in the United States

The Litter-Robot 4 Supply Bundle is a medium-sized, automatic self-cleaning cat litter box designed to make pet care easier. With dimensions around 27 x 24 x 29.5 inches and weighing 24 pounds, it’s quite sizable and may require a dedicated spot in your home. It features a top-entry design that helps contain litter scatter and reduces mess, while the plastic construction is sturdy and easy to clean. The standout feature is the self-cleaning mechanism that sifts waste automatically, so you don’t have to scoop daily—just empty the waste drawer when full.

This model supports up to four cats, making it suitable for multi-cat households, as long as each cat weighs over 3 pounds. The litter capacity is generous, accommodating standard clumping litter types. Odor control is strong thanks to included OdorTrap refills and carbon filters, which work together to significantly reduce unpleasant smells. Additionally, the Whisker app lets you monitor waste levels, litter usage, and even track your cat's weight, adding convenience and health insight.

Its large size and 24-pound weight mean it’s less portable and might not fit well in small spaces. Also, the smart weight sensors work best on flat, hard floors, so placing it on carpet might limit accuracy. Although the upfront price is higher than regular litter boxes, the bundle’s cleaning supplies and warranty offer good value. This litter box is a solid choice for cat owners seeking a high-tech, low-maintenance option with strong odor control and multi-cat support.

The Litter-Robot 4 Supply Bundle by Whisker is a self-cleaning, automatic litter box designed to make cat care easier and cleaner. It measures 27 by 24.25 inches in footprint and stands about 29.5 inches tall, making it a medium-sized unit that works well for most indoor cats. Made from durable plastic and fully covered, it keeps litter mess and odors contained better than open boxes. Its main strength lies in the automated sifting process that separates waste from clean litter, so you don't have to scoop daily—just empty the drawer when it’s full. This feature is especially helpful for busy households or those with multiple cats, as the box supports up to four cats weighing at least 3 pounds each.

The WiFi-enabled control through the Whisker app is a modern plus, letting you monitor litter and waste levels remotely, track your cat’s weight, and see activity patterns, which can be useful for health monitoring. Odor control gets a boost with included OdorTrap refills and carbon filters, which help reduce smells significantly compared to regular litter boxes. However, the box is fairly tall and weighs 24 pounds, which might make placement or moving it around a bit challenging in smaller spaces. The automatic system works best on firm, flat surfaces, so it may not perform as well on carpet. Also, it requires clumping litter to function properly.

This litter box is well suited for cat owners looking for a hands-off, tech-friendly solution to litter maintenance and odor control, particularly those with multiple cats or who appreciate smart home features.

The PetSafe ScoopFree OpenSky is a self-cleaning cat litter box designed for convenience and odor control. Its size (about 21" long, 10" wide, and 28" high) accommodates cats of all sizes, providing ample space without feeling cramped. The open-top design helps reduce any fear or hesitation cats may have about entering the box, making it a comfortable choice, especially for cats that dislike enclosed spaces. Made of durable plastic, the litter box is built to last and is easy to clean.

A standout feature is the automated cleaning system that sifts clumps into a sealed 8.5-liter waste drawer, which can hold up to two weeks’ worth of waste for one cat. This eliminates the need for daily scooping, saving time and effort. The sealed drawer also helps control odors, complemented by a built-in deodorizer that the manufacturer claims reduces smells up to four times better than traditional litter boxes. The model is app-controlled via Wi-Fi, allowing you to monitor your cat's health by tracking weight and litter box usage, which can be especially helpful for multi-cat households or owners concerned about their pet’s well-being. It automatically refreshes the litter bed after each use, making it suitable for multiple cats.

The litter box's height of 28 inches may require more space and could be less convenient in smaller areas. While the open-top design is preferred by some cats, it may allow odors to escape more easily than covered boxes, although the unit's odor control features help mitigate this. Additionally, the reliance on Wi-Fi for health monitoring means it is best suited for homes with stable internet connections. This litter box is a good option for cat owners looking to reduce cleaning chores and improve odor control, particularly for medium to large or multiple cats. Its smart features add value but require some comfort with technology and available space.