I can't believe I'm asking this disgusting question. I store my sweaters folded on the shelves of an open bookcase near my bed. I just discovered that several of them developed holes since I last wore them. I know for a fact that there was a mouse in my bedroom a couple of months ago and the internet says mice will chew fabric for nesting material, but I don't see a single dropping on the shelves. (My mouse problem has since been resolved.) I also don't see any evidence of moths even inspecting the sweaters under a powerful lighted magnifying lamp, and I never saw any flying, and I would have since it's so near my bed. Help.