I built a coop two years ago and it's in shape still. I probably now is what do i put on the floor of the coop? the coop is off the ground and is about 5'x9'. in the past i always used grass that I mowed but i haven't have in glass this year. What is the best things to put on the coop's floor. Also in the past the chickens eat the grass the i put in there. Anyone knows if it is bad for them if they do that? I have no chemical on my lawn.