Sorry, no longer available. Walmart has a new free sample of All-Bran Pink Lemonade Fiber Drink Mix. If you haven’t already taken advantage of the All-Bran Mail-in Rebate, you could buy a box of drink mix and get your money back (up to $4.99). I bought the All-Bran Strawberry Medley cereal and got a great deal here plus I share some rebate tips with you. Find out what other free samples Walmart is offering.