That is it, Otis Sues The County
I’d try Lawman Barney, where Barney’s number one job was “stalking, not fly killing.”
Good guesses but unfortunately all are incorrect. What does the device pictured do?
How about when Opie caught the fly in church - Sermon for Today?
There was the time Andy told Barney that his glorious singing voice would be drowned out by all the flies buzzing around his mouth because he kept using that honey and water throat spray stuff.