That's a lot of kittycats...maybe too many. I think a half-dozen's probably the maximum workable number. Keeping up with our four is tough enough. Example: We had 7" of rain this past Friday, and, as always, that meant 3-4" water in the basement. All the critical stuff (furnace, water heater, washer & dryer) is up on blocks so no problemo. But...I had to construct a plywood platform on a bunch of bricks for the cat boxes. They weren't big fans of getting their little feets wet to do their duty.