Hey! Get Your Dentyne Out of My Cheerios Kids Must Have Fallen All Over Themselves for This One By Ken Wheaton. Published on March 03, 2009. Most Popular James Lileks has captured one of them old-timey commercials, this one for a Cheerios. Or Dentyne. I'm not quite sure. The Dentyne is "Free of Extra Cost" in the Cheerios box. Not exactly a Maypo moment.