I didnt get out of my shop until after ten last night, just after pushing all the residual sawdust around the floor as if I were sweeping. This morning I noticed something I hadnt before, somehow. In the thin layer of dust on the are LOTS of tracks, lines like 3/16" wide, squiggling all over. It looks like a worm or something but there has to a ton of them considering they all appeared in about twelve hours. The floor is concrete, and likely cold since it dropped to about 35 last night. I looked for about a half an hour for ANY signs, a dead insect, anything. All that is visable are the tracks. Does anybody have an idea what these organisms are?