Therefore, most powderpost beetle infestations naturally disappear within a few years as moisture and starch content decrease. Presence of the fine powder sifting from wood does not prove that powderpost beetles are still active within the wood, as sawdust continues to vibrate from exit holes long after the infestation has ceased. Thick latex paint is an easy way to plug exit holes in the surface of rough lumber. Otherwise, colored wood filler can be used. Existing finishes must be removed prior to insecticide application.
Kiln drying kills larvae within infested lumber but reinfestation is possible.
Vault or tarp fumigation of infested lumber or movable items is a possibility, but is usually not practical. Structural fumigation is also not practical and is rarely, if ever, done in Iowa. It may or may not apply in your area. Prepared by Donald Lewis , Extension Entomologist. Before reprinting this information, please read the usage policy .