We had a thaw, then a lot of rain and a quick freeze causing a puddle to ice right in front of the coop door. It is hard to open, I can only actually open in a little bit just enough for me squeeze in. My husband wants to but pet safe salt/de-icer out there I told him no because I think it might hurt the chickens if they eat it, he says no because it’s pet safe. Who is right? Any ideas on how to fix, it’s difficult to get the waterer in when switching them out. I also don’t think his salt will work as we are going into a deep freeze tonight and staying near zero through the weekend.