Free sample of Purina One Healthy Metabolism for your cat. The link below takes you to the form, but if you have trouble accessing it, got to the Purina Pet Park Page (http://wm6.walmart.com/purina-home.aspx), select Purina One Smart Blend from the black menu below the picture then click on “get a free sample” link (see post photo). US residents only, one per household and good while supplies last.