Mommies and Pops, it's not a bad idea to keep a small pack of gum in your pocket or purse. Sometimes your little kids - 3 and up - will start to squabble while you are in church or a library or someplace where the noise is not permitted, and you can't at that moment figure out what the problem is, if there is a problem. Half a stick of gum can temporarily provide quick relief. You can address the squabble details later if necessary.
(P.S. Save the wrapper for later. Proper disposal of the chewed-up miracle intervention is advised.)