When you have two cats of different sizes, finding a litter box that accommodates both can feel like a puzzle. A large Maine Coon needs plenty of room, while a petite Siamese may prefer a lower entry. The Arm & Hammer Rimmed Open Cat Litter Box steps in as a smart, one-size-fits-most solution. In this guide, we evaluate this high-sided pan for multi-cat homes with varying feline dimensions. For more tips on managing multiple cats, check out our guide to litter boxes for cats with different diets.

Buying Guide

Size and Accessibility

The Arm & Hammer Rimmed Open Cat Litter Box measures 18.7 inches by 15.5 inches by 10.6 inches. This extra-large footprint gives even a bulky cat enough space to turn around and dig comfortably. The open design means no door or hood to intimidate a timid cat, while the 10.6-inch height is low enough for an older or smaller cat to step over without strain. If you have a senior cat, you might also appreciate our roundup of low-entry litter boxes for two cats.

High Sides for Less Mess

One of the biggest frustrations with multi-cat households is litter scatter. The high-sided design of this pan reduces spills and helps contain enthusiastic digging. It also secures liners in place, so you don’t have to deal with bunched plastic. This feature is especially useful when one cat is a vigorous digger and the other prefers a more delicate approach.

Odor Protection and Material

Two cats mean twice the waste, making odor control a priority. This litter box includes built-in smell protection to combat ammonia buildup. The pan is made from recycled materials, so it’s an eco-friendly choice. It works with any litter type, including pine, crystal, and clumping clay, giving you flexibility. For more on keeping your home fresh, see our top odor-control litter box picks for two cats.

Durability and Longevity

ARM & HAMMER recommends replacing litter boxes every 12 months to maintain freshness. The sturdy construction holds up well to daily scooping and cleaning. The rimmed edge prevents warping and cracking, even after repeated washing. If you need a quiet option for nervous cats, our quiet litter box guide offers additional insights.

Final Thoughts

The Arm & Hammer Rimmed Open Cat Litter Box earns our recommendation as a versatile, affordable choice for homes with cats of different sizes. Its high sides contain mess, the open design suits both shy and bold cats, and the odor protection keeps your space fresh. For a larger cat that needs extra room, the same pan works beautifully. If you prefer a covered option, consider the Arm & Hammer Rimmed Open Cat Litter Box as a starting point—it’s also excellent for multi-cat setups. Either way, this pan delivers reliable performance without breaking the bank.

Frequently Asked Questions

Can this litter box fit two cats at once? It’s designed for one cat at a time, but its large size means two cats can share it in rotation. For simultaneous use, you may want a second box. Learn more about extra-large litter boxes for two cats.

Is the high side too tall for a small kitten? At 10.6 inches, most kittens over 8 weeks can step in easily. For very young or tiny kittens, you can add a low ramp or choose a lower-sided box.

How often should I replace this litter box? ARM & HAMMER suggests replacing every 12 months to keep odors at bay. The recycled material holds up well, but annual replacement ensures hygiene.

Does it work with self-cleaning litter boxes? No, this is a standard pan. For automatic options, see our covered litter box recommendations.