Plastic vs. Stainless Steel Litter Boxes: Which Is Better?

Stainless steel is often the better long-term choice if you want a litter box that is easy to wash and less prone to retaining odors. Plastic can still be a practical choice if you need a lighter box or want to try a different size and shape before committing to one.

Material is only part of the decision, though: your cat needs enough room to enter, turn around, dig, and use the box comfortably. A well-fitting plastic box is better than a stainless steel box your cat finds cramped or difficult to enter.

Plastic boxes are generally lighter to lift and move, which can make frequent emptying and cleaning easier. Over time, their surfaces may become scratched; if a box remains smelly after a thorough wash, replacing it may be the most practical option.

Stainless steel has a nonporous surface and can be a good fit for a household that prioritizes routine cleaning. It is usually heavier than plastic, so think about where you will wash the box and whether you can handle it comfortably when it contains litter.

For a larger cat, compare usable floor space rather than relying on an “XL” label alone: your cat should be able to turn without pressing against the sides. If your cat is older, has limited mobility, or hesitates at a tall entrance, an easy step-in height may matter more than the box’s material.

High walls can help contain litter kicked during digging, while a lid may give you the enclosure you prefer; neither is worth forcing if your cat avoids using the box. Our guide to the XL Enclosed Stainless Steel Cat Litter Box with High Walls & Lid for Big Cats focuses on those fit choices alongside the material.

Whichever material you choose, scoop regularly and wash the box as needed with a cat-safe cleaning approach, then rinse and dry it before adding fresh litter. Keep the box in an accessible, reasonably quiet spot so your cat can use it without feeling trapped or interrupted.

Our team would choose stainless steel when cleanability is the priority and the size and entry suit the cat; we would choose plastic when its lighter weight or a particular shape makes daily use easier. If you are switching box styles, give your cat time to adjust and watch whether they continue using the new box comfortably.