The kittens have just been relocated to the bathroom. The door is protected by a 36" board. There's a 20" tall box on the outside to help mom and dad get over-- neither one of them is a huge jumper. They can get back out through a bathtub->counter->over trajectory, or if they can't they can stay inside. Both sides are cat-habitable-- litter box, food, water-- so all should be OK.
Oh yeah. They also both seem to like dry food. Oops almost likes it better than canned-- go figure.