But sometimes you can.
The house guests are arriving tomorrow. The house is pretty much clean except for the things you do the night before like scrubbing showers. I was hanging up some clothes in my hallway closet and left the door open while I went to get some sweaters.
I came back to the sound of Obi in the ceiling. I caught him as he came down onto the clothes bar to walk to a different set of joists. As I pulled him down, Oliver climbed into the closet.
“You know what? I don’t care. Go ahead and play in the closet,” I said. I put Obi on the floor and went back to cleaning.
Three minutes later, Kitten Thunder was in the bedroom with me.
It’s no fun if it’s allowed.
Kitten Thunder: Life lessons and cat tales 
Exactly.