The adult beetles are small, ranging from 2-7 mm in length, light brown to almost black in colour. Life span of powder post beetles varies from 1 to 5 years, depending on the quality of the wood they infest, fluctuation in temperature, moisture content of the wood & species of beetle. The larvae eat hard dry wood, tunnel through timbers in successive generations until the interior is completely reduced to fine powder and the surface shell is perforated by many small shot holes. Generation after generations of the insects may develop in the dry wood with little external evidence until yellowish powder is seen.
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.
Annual Contract -
Four services conducted in order to provide protection for a period of one year.
4th Service, carried out eight months after the 1st Service.