Christmas Eve and Christmas day something got into the coop and killed 4 of my hens (think it was weasel or mink).The other 4 girls are safe in the basement for the time being. I need to secure coop this Spring, Rats and maybe those other varmits have been chewing holes in the plywood floor I have. I need to put something down that they can't get through. What do you think is best? Also I've only been able to kill one rat with a snap trap.....I havent set it on a consistant basis . Maybe that's the problem.