Walk into any pet store and you'll see rows of covered litter boxes. The pitch is obvious: contained mess, trapped smell, a more discreet setup. But flip that over and you'll find equally passionate arguments for going lidless. So which is actually better?
The honest answer is: it depends — on your cat, your home, and how realistic your expectations are.
The Case for Covered Litter Boxes
Covered boxes do trap some smell inside. The hood contains odours so they don't diffuse into the room as quickly, and it visually conceals the contents — a genuine benefit if your litter box lives in a living space rather than a dedicated utility room.
They also prevent kicking. Cats who enthusiastically scatter litter after doing their business will send less of it flying with a lid in place. And for households with dogs or curious toddlers, the covered design adds a physical barrier.
The Problems with Covered Litter Boxes
Here's where the covered box starts to lose its advantage. The same hood that traps smell also traps it for your cat. Ammonia and felinine — the two primary odour compounds in cat waste — concentrate inside an enclosed space. For a cat spending time near or inside the box, this means sustained exposure to respiratory irritants.
Studies on litter box habits consistently show that some cats avoid covered boxes simply because the interior smells too strong between cleanings. A covered box can also feel claustrophobic to larger or long-haired cats who don't fit comfortably under the lid.
From a maintenance angle, covered boxes are harder to keep truly clean. The lid harboures smell residue on its underside, and the interior corners of the hood accumulate grime that gets missed during regular scooping.
What About the Smell?
Counter-intuitively, covered boxes don't actually reduce how your home smells long-term. They delay odour dispersal, but when you open the lid to scoop, you release a concentrated burst of smell all at once. An uncovered box, by contrast, allows odour to dissipate gradually — and regular scooping keeps baseline smell low.
If odour is your primary concern, a high-sided uncovered box with a litter mat often outperforms a covered box that only gets scooped once a day.
Real Talk: What Actually Works
Most cats don't have a strong preference for covered versus uncovered — but they do have strong preferences around size, cleanliness, and location. A box that's too small, too dirty, or in a high-traffic area will be avoided regardless of whether it has a lid.
If you want to try a covered box, look for one with a removable lid for easy cleaning, a large enough opening that your cat isn't brushing the sides, and make sure you scoop at least once daily. Consider the modular designs on Chewy that allow lid-only cleaning.
If you're committed to uncovered, a large-capacity litter box with high sides reduces tracking and contains splashes without the enclosed feel.
The Bottom Line
Neither covered nor uncovered is universally better. Covered boxes offer privacy and initial odour containment but trap irritants for your cat and require more diligent cleaning. Uncovered boxes are easier to keep clean and less intimidating, but tracking and visual exposure are genuine trade-offs.
What matters most: one box per cat plus one extra, scooped daily, in a quiet accessible location. Start there before worrying about the lid.