Mambo Sprouts is back with another sweet giveaway, guys! Right now, you can get a free Mambo Sprouts Coupon Book for Summer 2015. This free coupon book offers savings on all of your trusted natural and organic products! The offer is valid for the first 1,000 people who sign up. The Mambo Sprouts Coupon Book will be mailed out at the end of July. Available to households in the continental U.S. only.