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There are little round holes in the joists and floorboards in my crawl space. What is causing them?

April 26, 2017causing Crawl floorboards joists little round

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There are little round holes in the joists and floorboards in my crawl space. What is causing them?

1 Answer

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10 Posted

These tiny holes are more than likely exit holes made by powder post beetles. Powder post beetles lay their eggs inside the wood, and the holes you see are made when the hatched beetle exits. If left untreated they can cause structural damage to your house.