I did all container gardening last year and it worked pretty well but am doing the full fledged garden this year - small one, but I did experience a cat using it for his box this week.....darn it, I don't have a cat so I wasn't expecting that!
Cats do have a way of finding good soft soil for their business. We had a dog, who belonged to the country club, no one knew who he belonged to, but he was a good dog, very good golf manners and he was fed lunch by the club, and whenever we had a meeting with food, some was put aside for him. He decided my front raised garden was a good place to nap. He showed my pup, how nice it was. They both happed there. The second year, it wasn’t so nice, so my plants had a chance to flourish.