I read up on it (briefly) before we bought the crate so we have never used it as a punishment. Ginger doesn't mind being in her crate at all. I tried this method today and it has gone very smoothly. She just slept most of the time and when I let her out she eagerly played for a while (she loves tug of war with Tyler!) and then when I said "Go to your room" she went in and got comfortable. We just finished another play time and now she is laying in her crate with the door open licking peanut butter out of her Kong without a care in the world.