question... has any of you used a dog door for chickens to get from coop to run? Was thinking of this for winter. We are going to enclose the run when it gets cold so they can still get outside of the coop and not be enclosed so much Thought that if they would use a dog door then would keep the coop warmer. Cant afford auto door opener. Got a brand new dog door at a thrift store for 5 dollars never been opened. If not will use it for the dogs