Speaking of which, there are various trade groups and professional organization such as the Cooperative Extension Service.
Also, we have the UMASS Pesticide Education Program, that are providing training on an annual basis.
Here is what type of programs do these various trade groups and professional organizations can provide you with:
Continuing Education (PACE) Approved Programs
Here we have the Continuing Education PACE Approved Programs.
Via this programs you will be required to obtain a required number of continuing education contact hours.
It is eesential if you want to maintain your certification or license.
Do not be surprised if you receive a requirement to retake the whole examination in order to maintain your license.
Once you undergo the classes and the testing, you will have to to retain all certificates as a clear proof of your continuing education.