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Roundheaded Borer

Roundheaded borers are the larvae or grubs of longhorned beetles. They are found near dying or freshly chopped down trees. Roundheaded borers can become a problem in homes during the winter. The most common way that roundheaded borers enter the home is through firewood. Roundheaded borers do not, except for one exception, infest structural or interior wood. The exception is the old house borer. The larvae of the old house borer infest soft woods in homes and buildings such as pine, spruce, and fir that is less than years old. They will not infest rotten wood. The larvae can live for years within the wood, anywhere from 2 to 10 years, feeding and causing damage. After the larval stage, the longhorned beetles do not infest or live in houses, they live in trees.

Information from International Pest Control Operators' Network

old house borer
Photo, used with permission from Urban Pest Control Research Center

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