Wood borer control service "you have to clean it, then comes back the next day, every day, their wooden cupboards and drawers in white powder, see? If yes, then most likely you borer. Powder Post Beetle One problem, commonly called wood borer. They are very destructive and reduce dust in precious wood. Wood Borers brown to black in color, about 4 mm long and deep. They Wood spend their life. And thus, they live in their food. They lay eggs in cracks / holes in wood. Insect’s life cycle, unlike animals or humans. The eggs hatch larvae, pupa and finally adult then become the. Larvae make tunnels in the wood starts to constantly eat wood.