Wood-Destroying Insect (WDI) Inspection Information (Category 12)
Ohio regulation requires that inspections for wood-destroying insects in a property involved in a real estate transaction be performed by a licensed inspector. The Wood-Destroying Insect (WDI) Inspection license is part of Ohio Pesticide Law and therefore requires the inspector to obtain an Ohio Commercial Pesticide Applicator License. Additionally, the inspector is required to attend a mandatory training provided by Ohio State University Extension before obtaining their license.
Wood Destroying Insect Inspection (Category 12) Requirements
I DO NOT have an Ohio Commercial Pesticide License |
I have an Ohio Commercial Pesticide License |
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1. Apply for a Ohio Commercial Pesticide Applicator License and pass the Core and WDI (Category 12) exams.
2. Complete the mandatory training for Wood-Destroying Insect Inspections offered by Ohio State University Extension 3. Obtain a business license if you own your business
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1. Pass the WDI (Category 12) exam.
2. Complete the mandatory training for Wood-Destroying Insect Inspections offered by Ohio State University Extension 3. Add errors and omissions to your insurance
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WDI Recertification Requirements
To keep a Wood-Destroying Insect Inspector (WDI) license current, applicators must take 5 hours of recertification credit every 3 years. The specific requirements are:
You must also pay an annual $35 renewal fee to the Ohio Department of Agriculture.
Note: The WDI training offers 5 hours of recertification for the day: 1 hour for Core, and 4 hours for category 10b (there is no specified for category 12). Registration preference is given to those attending for initial training. There is no on-site registration for recertification credit.
Wood Destroying Insect Inspection Report - Form NPMA-33 (New Form now Available)
Commerical applicators conducting Wood Destroying Insect Inspections must make a complete record of finding of each inspection on form NPMA-33.
Click here to access the National Pest Management Association Website
Click here for Updates to WDI Reporting
Mandatory WDI Training - Upcoming Classes
Next Course:
July 17, 2025 - Webinar - Click to Register
Class Schedule
8:00 a.m. - Registration and Check in Begins
8:30 a.m. - Course Begins
4:00 p.m. - Class dismissed
Exams available upon conclusion of in person class only. Webinar attendees must schedule an exam with the Ohio Department of Agriculture. To schedule an exam, click here.
Registration:
Pre-registration: $90
On-site registration: $100
Visit OSU Extension publishing here to purchase the study materials for core and category 12.
Refunds and Cancellations: There is a $25 processing charge per registrant for any cancellation, including Purchase Orders. Notify Valerie at Recertification Specialists prior to the program date to request a refund 740-624-2405. There is a $30 fee for returned checks.
Location:
Ohio Department of Agriculture
Bromfield Administration Building
8995 East Main Street
Reynoldsburg, Ohio