My coop is a repurposed shed. It's completely made out of wood. I lay a three inch deep layer of wood shavings on the whole floor, as well as in the nestboxes. Every few weeks, or whenever it starts to get messy, I replace the shavings. I've read about how to do a thorough clean by wiping everything down with a bleach and soap solution and spraying it clean, but I don't want to do that in case the floorboards (or anything else for that matter) start to rot. Suggestions?