Free Sample: Purina One SmartBlend Dog Food June 4, 2010 at 10:00 am by Cindy Livesey | Freebies 0 comments Boy Walmart is really putting out a lot of Free samples lately. This time you can get a Free Sample of Purina One SmartBlend. Head over here to get your free sample. (thanks Kara!) Coupons powered by Coupons.com The links in the post above may be affiliate links. Read the full disclosure.