PA WDO Inspections?

Does anyone know who I contact to go about getting a license to do WDO inspections in PA ? And how much$ and what kind of training?

No such license.

No licensing, but you have to be a certified pest applicator in order to appropriately fill out the npma-33. Here is the training information http://extension.psu.edu/pests/pesticide-education/applicators/certification/brochure

Exactly,
PA Department of Agriculture License / Category 12
You will need to take the Category and CORE Exam
Books are purchased On-Line.
One Test is Open Book (Think Category) … Not sure…

Misread your post…
There is no such WDO License as Nick suggested
only a WDI License…