via youtube.com
The first episode of this PSA, between-Saturday-morning-cartoon, episodic from 1972. I still remember the theme song from this years later. There's no way I remember the original air date as it must have run for several years, but I was just happy when I didn't have to watch "In the News" sponsored by Kellog's.
I think this was on sometime after Speed Buggy and before the The Krofft Supershow... ah, it brings me back to a happy place.