Petmate Giant Litter Pan?

What is the largest cat litter box available?

In all my research, the Petmate Giant Litter Pan with Microban is the largest cat litter box available. So, this is the one I recommend as the best Maine Coon litter box. It’s got at least four or five inches on the next largest one I could find, which is a pretty significant size difference.

What is considered a large litter box?

As a general rule, we are talking about a litter box that is at least 1.5x the length of your cat, but the bigger, the better. I have a Maine Coon mix who is as big as domesticated cats get. So, I set myself a mission to find the best extra large litter box for big cats.