Hello! First time chicken owner. I have the coop and run built and chickies in a brooder in the garage! I was just wondering if I can get some input as to the flooring Beneath my coop, I don't imagine they'll spend a lot of time down there since they'll have access to a decent size run. It's concrete now, and the way we built the coop makes it difficult to clean down there. (2 front gates open up) it's concrete now, which I could hose down easily, but is concrete ok for the chickies feet? Will they mind it? I was thinking I could lay down those rubber mats, often used in gyms and playgrounds. I don't know if they'd scratch at that and pull up rubber bits? I know it'd be easier to clean off than pine or sand or deep liter. Thoughts?!?!