New Buy One Get One FREE Mentos Coupon!June 25, 2010 by Mitchell Wischmann This post may contain a link to an affiliate. See my disclosure policy for more information. There’s a new Mentos coupon available! ‘Like’ Mentos on Facebook and click on the Coupon tab to print a buy one get one FREE coupon! This coupon is available today only!Thanks, Common Sense With Money!