Free Sample: Purina SmartBlend Pet Food – Available Again! June 18, 2010 at 11:40 am by Cindy Livesey | Free Samples 1 Comment Purina One SmartBlend Pet Food Free sample is available again. You can head over here to request your free sample. (Thanks Kristy!) Share Pin TweetShares 0 Coupons powered by Coupons.com The links in the post above may be affiliate links. Read the full disclosure.