Save $10 on Premium Horse Feed Join the Purina Difference™ Rewards Program and SAVE $10 when you buy 2 Bags of Premium Horse Feed. Register by December 31, 2012 to receive your offer! REGISTER for the Purina Difference™ Rewards Program Here. This entry was posted on Friday, November 2nd, 2012 at 3:41 pm and is filed under News & Updates. You can follow any responses to this entry through the RSS 2.0 feed. Both comments and pings are currently closed. Comments are closed.