Starting on September 25th at Walgreens, you can get free Mentos UP2U gum with the following deal scenario:
Buy Two Mentos Up2U 14 piece Gum (Sale Price $0.99 with in ad coupon)
Use $1/2 Mentos Gum UP2U Pack, SS 09/11/11 or 08/14/11
Use $1/2 Mentos Up2U Gum, 14 pieces from the Walgreens October Coupon Booklet
Get it for free
Make sure to hand the manufacturer coupon first and the Walgreens coupons last to avoid any beeps at the register.