(to the tune of "Who's That Knocking at My Door") I stepped outside to take some air yesterday when I heard a faint crunch, crunch, crunch coming from the direction of the stacks, which were about 30 feet away. It sounded familiar. I followed it to its source, an unsplit round of white fir on the top of the most recent stack. There was a fairly large pile of frass under the round, which I recognized immediately. It was the tell-tale sign of one of these little beggars. a pine sawyer or roundheaded wood borer, the larvae of the Pine Sawyer or Longhorn Pine Beetle. It's amazing how much noise these things make and how much wood they can chew up. Fortunately, they only bore in the sapwood, so the depth of the destruction is limited. They are about 1-1/2 in. long, I've been wondering how they'd be pickled in tequila. While excavating for my leach field, I found similar grubs, but much larger. They were about 4 in. long, the size of a large tomato worm. Never did figure out what they were.