September 13, 2013 No Comments FREE Chex Mix at Xtra Mart Print out the coupon and redeem for a FREE 3.5 oz Chex Mix at Xtra Mart. Coupon valid 9/13/13 – 9/26/13 only. While supplies last. Locations. FREE Chex Mix at Xtra Mart – EXPIRED Facebook Twitter Add Comment Notify me of follow-up comments by email. Notify me of new posts by email.