Purina is having a special promotion on their Dental Health brand Canine and Feline formulas. When you purchase either the 20-lb Canine bag, the 8-lb Small Bites Canine, or the 8-lb Feline Formula, you can receive a special rebate of up to $41.00. All you have to do is fill out a rebate card and send it in along with the special weight circle (on the bag), and your receipt. This offer is good until February 28, 2010 for up to three rebates per household.