10 Best No Smell Litter Box 2025 in the United States

The Neakasa M1 Open-Top Self Cleaning Cat Litter Box is designed to cater to cat owners looking for convenience and odor control. Its spacious, open-top design is a significant strength, allowing cats of all sizes easy access while encouraging natural behavior. This feature makes it particularly appealing for households with multiple cats or larger breeds.

Another key advantage is its self-cleaning capability paired with the innovative 'Pull and Wrap' waste disposal system. It effectively minimizes direct contact with waste, which not only simplifies maintenance but also helps maintain a fresher home environment. The built-in sensors enhance safety by pausing operation if any cat touches the box while it's cleaning, adding an extra layer of comfort for pet owners.

With a large capacity that can last up to 14 days before needing attention, this litter box suits busy owners well, making it a great choice for those who travel or have a hectic schedule. The litter tracking mat included also helps keep your home cleaner, addressing one common concern with traditional litter boxes. However, the Neakasa M1 is not without its drawbacks. Some cat owners may find the size a bit bulky for smaller living spaces. Additionally, while it aims to control odors effectively, some users might still notice smells if the waste bags are not changed regularly. The reliance on technology, particularly the mobile app for monitoring, may also be a hurdle for less tech-savvy users.

The Litter-Robot 4 Supply Bundle by Whisker is a medium-sized, automatic cat litter box designed to minimize odor and reduce maintenance for cat owners. Its plastic material is durable and easy to wipe clean, supported by included cleaner wipes and liners, making upkeep straightforward. The standout feature is its self-cleaning system that sifts waste into a sealed drawer, which helps limit smells significantly compared to traditional litter boxes. Additional OdorTrap refills and carbon filters work together to further control unpleasant odors and reduce litter tracking around the house.

The unit is relatively large and weighs 24 pounds, so it needs a stable, firm surface for best performance and is best suited for indoor use. It supports up to four cats, each weighing at least 3 pounds, making it a good fit for multi-cat households. Entry is designed for easy access, and the modern black design is sleek enough to blend into most home settings. Users can also monitor litter levels, waste, and even their cat’s weight via a smartphone app, adding a convenient tech touch.

Though the initial cost might be higher than a standard litter box, it includes extras like liners, wipes, and filters to get started. Some users may find the size a bit bulky for smaller spaces, and it requires power to operate. For those looking to avoid daily scooping and reduce litter box odors effectively, this product provides a smart, hands-off experience with solid odor control and easy cleaning features.

The PetSafe ScoopFree Crystal Pro is a self-cleaning cat litter box designed to keep your home odor-free with minimal effort. It uses special crystal litter trays that absorb urine and dry solid waste, offering about five times better odor control than regular clay litter. This means less smell and less scooping—one tray can last up to 30 days before needing replacement. The box is made from durable plastic and measures about 20.6 inches long, 10 inches wide, and 28.4 inches tall, fitting comfortably in most indoor spaces without being too bulky.

It features an enclosed design with a front entry, providing cats with privacy and helping reduce litter tracking outside the box. Cleaning is simpler thanks to an easy-to-remove rake and smooth interior, and a digital health counter helps you monitor your cat’s bathroom visits, which can be useful for spotting health issues early. A light indicator tells you exactly when to swap out the disposable litter tray, making maintenance straightforward.

However, the litter box only works with PetSafe’s own disposable or reusable crystal trays, which adds ongoing costs. Also, while the size suits many homes, it might be a bit large for very small spaces. If you're looking for a hygienic, low-odor, and low-maintenance litter box and don’t mind using brand-specific trays, the ScoopFree Crystal Pro could be a great fit.