remember when handiwipes first came out, I think that is what they were called, tougher than a papertowel, a disposable washcloth? That's what the beetle cloths look like. I bought some, Ledifini saw mine and got his. Just thin maybe nylon or polyester lightly textured. The bees chew them up which creates the fine strings that trap the beetles. Remember the mystery item on the sbb of my hive? That's what it was, bees dropped it from above frames to below frames, yellow and white, round by then cloth.