How Many Cats Have You Ever Had At One Time?

Wow that's a lot of cats! The most I've ever had in my home was 3. Even three seemed like a lot lol. You have to clean the litter box so much more often. It's usually suggested to have one litter box per cat plus one. We always just had one because it took up too much room. It was the large domed litter boxes. It would sometimes start to smell so it had to be cleaned twice a day. Right now I have two cats and this seems like the perfect number. They have each other if they want to play but can easily be alone if needed. Their hierarchy is less complex since it's just the two of them.