Free Mtn Dew Kickstart at Kroger - Today Only! Head over and download a digital coupon from Kroger (and affiliate stores) for one FREE Mtn Dew Kickstart (12 fl oz or 16 fl oz cans) between the hours of 12:00am and 11:59pm PT. You'll have until 3/15/2015 use it. If you don't have a Kroger or affiliate store shopper card, you can pick one up for free at your local store.