We were working on insulating our coop, which is a run down old shed we converted. We're fixing it up and started to insulate with the blue foam stuff. The 2.5 - 3 inch thick with a decent r-value. We got about 1/2 of it done in one day and the next day, we noticed the chickens were pecking it. So we decided to see if it was just because it was "new" and we waited about a week. Now all the foam we put in are falling out because they pecked it so much, there are like big holes in them. We need to use something else, and my husband was thinking the foil backed stuff but not really sure if they will peck through that too... what are you using for your insulation?