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You're correct. WDI is wood destroying insects and WDO is organisms. Rot is not an insect and is a wood-destroying organism. Does your state regulate only insects and not rot. In our state, we can't even comment about rot unless we have an SPI (structural pest inspector) license and there's no way one can do a home inspection without it crossing into the realm of a WDO inspection as defined by our state'd dept. of agriculture.

OT - OF!!!


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I guess what I'm trying to figure out is this; If a person is trying to identify what type of inspection they do(WDI, WDO), can they list one or do they need to list both. The majority of the states from what I can tell use WDO to cover bugs, rot, fungi, etc.

I understand about Washington and I think Oregon, from what I understand they are the only two states that have the unique requirements or should I say restrictions.

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In Mich we do WDI and do not do WDO. In fact we are currently meeting with the Dept of Agriculture to refine these very terms. The HUD WDI forms, if I recall correctly as I am not in the office, define the difference on the back.

Will post more later and yes Mike O is right!

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  • 11 months later...

In Florida it's WDO as deemed by the Dept of Ag so it includes wood rot, white rot, brown rot, old house borers, powder post beetles, termites, and the list goes on.

I'm licensed by the state (I own a seperate pest control company) to conduct WDO inspections but usually leave to the guy that runs the daily ops of the pest control company since hes been doing it for 17 years.

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