So I will be making the hole for the pop door soon and I am wondering about the placement. It will be a guillotine style door. However, is there a benefit to having it one way or the other? I am trying to decide if I will have the track on the inside of the coop or the outside. It seems to me having it on the outside would be better as it is less likely to get clogged with shavings. It will go past the door and into a track so it will be predator proof and the pop door will lead out to a covered run which will also help deter unwanted guest. If you have opinions or experience on what worked (or didn't) I would love it if you would share. One day I would love to hook it up so it will be an automatic door if that maters. Thank you.