My hubby built the coop with a plywood flooring... (the coop will be elevated somewhat) and I am wondering if I have to have some type of covering over top of the plywood before we lay down our pine shavings. Also, with the DL method, since we don't have a dirt floor to help the composting of the poop, will it start smelling in the coop? Will I need to clean out the flooring more often than once or twice a year this way? I'm a little confused on which direction to go here. We're supposed to be getting our chickens tonight, but have to head to the feed store first to finish the coop! Any thoughts would be much appreciated- thanks! Also, is food grade DE neccessary?