Used to take that class so I could buy the restricted chemicals. Quit doing it about ten years or so ago, and if I need any, I let my in-laws get them for me. However, I don't really do anything anymore that requires restricted chemicals.
I keep my applicators license up to date. Usually the county extension office has a few lunch and credit classes a year. A grass and forage specialist from UGA comes to our monthly cattleman's meeting once a year speaks and hands a credit hour out.
