Thanks guys!
David 7+1 is quite enough. This is not counting the "grandcats" that periodically turn up. The cats are very "domesticated", to the point that even though they can go in and out as they please (hunting trophies)* they prefer to use clean kitty litter. ......

* at least the current bunch goes for bigger game, previously they brought in worms, ever tried to worms to get out of a carpet? They also realized putting their prey (mice & chipmunks) in the bathtub guarantees endless fun (for them). Of course, as soon as I see this I rescue the poor things.... trying to get a chipmunk unharmed out of a drain is an experience by itself.