We are building a new chicken coop. We are building it with the 5/8” inch plywood floor. We are placing flooring on 4 x 4’s pressure-treated. We are wondering if we should put 1/2” galvanized wire on the dirt before we install the 4 x 4s & before attaching the plywood flooring. We are considering adding the wire in hopes of keeping rats/mice from living underneath? Is the wire even necessary as it adds lots more labor & cost? We are trying to work rat prevention into our coop.