The Ontario Pesticide Education Program (OPEP) has very recently compiled an excellent video on what a grower can expect when a PMRA inspection official comes to visit your farm.
Click her for video
OPEP offers a number of courses and training opportunities for farmers to become certified to use Class 2 or 3 pesticides on their farms.
Ontario and Pesticide Training and Certification (OPTC) also offers courses for farmers to become certified exterminators for a number of disciplines including greenhouse pesticide use.