The other day I freaked out when I found my 20# "varmint proof" feeder turned upside down on the far end of the pen and empty! I thought, "who the heck could hv done this??!!". The next day I came out to find one of our horses (my hubby turned her out in the clean back yard cuz she is recovering from a hoof abscess) standing in the coop pen leisurely eating all the chix feed! (She's eating their feed while they are all down at the barn gleaning spilled horse feed!). We open the door every morn to let the girls free-range and she just put her head down and squeezed in. I went in to shoo her out and she just very delicately turned around and left. I had a piece of chain and 2 snaps and cut a 18" piece of 3/4" PVC, threaded it thru and hooked it on the open gate. Chix are free to come and go and it keeps the 1000# varmints out!