We're going away for a month and don't want to saddle our neighbors entirely with the chickens they've already seen and heard more than enough of. I have heard of automatic chicken doors and was wondering if anyone has more information about them or could recommend any? Are they safe in general? My chickens are nefarious for not going in at night, but after many fiascos with chickens on the roof of our house, we've barricaded all possible roost spot a outside the coop. I still don't trust them, though... Would you recommend an automatic door or not?