I think just about everywhere you are supposed to be licensed unless you are doing your own property. I have no idea what the fines are, may find out someday, but there is no enforcement in my area that I know of. I've been researching a little to see how I can get licensed in PA. All I want is an herbicide category to spray gly, but have been having trouble finding info on it and if one can acquire just a license for that. I only do minimal spraying anyway.People around here are getting popped left and right. A good friend of mine who is a custodian got nailed for spraying a fence line with roundup that he bought at Walmart.
I gotta find out what the fine was (this is WI - perhaps one doesn't need to be licensed in other states)