Which method of treatment is often used on wood that has been infested with powderpost beetles?

The method of treatment that is commonly used on wood infested with powderpost beetles is the application of insecticides or heat treatment. Insecticide application targets the beetles directly, effectively killing both adult beetles and larvae residing within the wood. This approach is crucial because powderpost beetles can cause significant structural damage if they are not appropriately managed.

Heat treatment is another effective method, which involves raising the temperature of the infested wood to a level that is lethal to the beetles. This treatment is advantageous as it penetrates all layers of wood, ensuring that hidden larvae and eggs are also exposed to lethal temperatures.

While chemical fumigation can be effective for extensive infestations, it is not as commonly used specifically for wood, as it requires more extensive setup and safety precautions. Structural reinforcement focuses on repairing damage rather than addressing the infestation itself, and natural pest deterrents may have limited efficacy, especially with a resilient pest like powderpost beetles.