Old House Borer
Hylotrupes bajulus
Wood-Boring PestsLarge gray-black longhorned beetle, 5/8 to 1 inch long. Larvae bore in softwood, especially pine. Can re-infest same wood for generations. Creates oval exit holes. Serious structural pest in some areas.
Control Methods
Recommended methods for controlling this pest
| Method | Type | Effectiveness | Requirements |
|---|---|---|---|
| Preventative Borate Wood Treatment | Chemical | Required |
Common Harborage Locations
Where to find this pest during inspections
| Location | Why Found There | Priority |
|---|---|---|
| Stored Lumber | Wood-destroying pests consume material, protection from weather, often in contact with soil. | Medium |
| Wood Framing | Direct food source for wood-destroying insects, hidden from view, often has moisture issues. | Critical |
| Hardwood Floors | Powderpost beetles attack hardwoods, gaps between boards collect debris, moisture from beneath. | Medium |
Important Disclaimer: The information provided in this knowledge base is for educational and reference purposes only. Pest management professionals should always consult current product labels, Safety Data Sheets (SDS), manufacturer instructions, and applicable local, state, and federal regulations as the definitive source of truth. Product formulations, application methods, safety requirements, and regulations may change over time. This information may be out of date and should not replace professional judgment, proper training, or required licensing and certifications.