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Powder Post Beetles

Problem:

Powder Post Beetles are second only to the termites in the damage they do to seasoned wood. There are many species and their presence can be detected by the existence of tiny holes (from 1/32 to 1/8” in diameter) in the wood and piles of frass (sawdust mixed with excrement) that they push out of these holes.

Control:

You have a choice of two treatments if the problem is not so advanced that you need a total beam replacement. You can use an Injector Plug to deliver a slow penetrating treatment that will allow the pesticide to soak into the wood timber. Install the plug in the uppermost corner of the beam by drilling the hole from the upper corner down at about a 20 degree angle, making sure that you do not penetrate through the other side. The plugs can be installed on both sides, however you don’t need to do this as long as the plugs are spaced every 36 inches so that the seepage and wicking into the beam will be more than adequate for proper treatment of the timber. Next inject the pesticide until the plug is full. Once the pesticide has wicked into the beam you can repeat the process until you begin to see signs of the pesticide seep through the beam. At this point you can install the plug caps and wait to see if there are new signs of pest damage. You may need to add additional plugs or simply repeat the treatment until you no longer see signs of insects.

Note:

Before treating for Power Post Beetles, it is extremely important to make sure that timbers and beams still meet their structural requirements.

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