Wood-Destroying Organism Inspection Resources

InterNACHI provides inspectors a Wood-Destroying Organism checklist report, certification logo, online training course, and inspection field guides.

Checklist Report (free download):

This checklist does not require the inspector to specifically identify any insect. 


Visible Evidence:

We often see clauses in inspection reports that take this form: “No visible evidence of [insert applicable defect].” We have concerns about the words “visible” and “evidence.” Please read more about using certain words in your inspection report.


Logo (for members):


Course (free & online):


WDO Insect Inspection Guide (free download):


Field Guide (for purchase):

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