Here are two more pictures about my grass box. This is from several years ago - I used to like to escape form the deck and chew on the grass in the yard, so Dad planted me my own box of fresh, young grass. It wasn't CAT grass, but I am going to ask him to plant us a box of cat grass this spring.
And, Spitty, I never did pee in it! But it was very comfy to nap in.