I believe everyone who told me it was ok to put flagstones under my deck. After all, people make sidewalks and maybe patios out of flagstones and no one says that provides homes for mice or rats.
But what IS the difference between flagstones and a piece of plywood. How come one is ok to lay on the ground and the other isn't?
Do mice dislike rock and like wood? and would that matter since they enter the ground just to the side of the wood, iiuc?