Just bought a place in the country and there's an old milk house attached to the barn. Cleaned it out and power-washed it. The concrete floor is cracked and there's a (slow) drain in it. Will this be alright for a chicken coop? Folks before had chickens in it, but used the deep litter method (about 5 years' deep) I was surprised to find the drain! I'd like to use it for my coop since it's insulated, has water & electricity, plus windows for ventilation. I'm only getting about 10 laying hens.