Free Sample: Purina SmartBlend Pet Food – Available Again! June 18, 2010 at 11:40 am by Cindy Livesey | Freebies 1 Comment Purina One SmartBlend Pet Food Free sample is available again. You can head over here to request your free sample. (Thanks Kristy!) Coupons powered by Coupons.com The links in the post above may be affiliate links. Read the full disclosure.