Wood borers are tiny beetles whose larvae feed extensively on wood. The adults make tiny pinhead size holes on the wooden surface before flying out. The frass or powder then begins to fall out from these tiny holes. This is the first sign of infestation in the furniture. Wood Preservative chemicals are injected into the tiny holes created by the wood borers with the help of a syringe. This kills larvae present in the wood. The surface of the wood is also sprayed with chemicals that contain a petroleum base.