I have witnessed on all of the pressure treated lumber of arch built 8 years ago, at every knot in the wood along the grain of the knot there are lines of saw dust oozing , for the lack of a better word, out of the wood. I have inspected for wood boring beetles, carpenter ants, canter bees and termites and have found not evidence of the such. So what can it be?

waterloop Changed status to publish April 9, 2024