Buy 12 get 1 FREEFrozen Raw, Freeze-Dried, Goat's Milk & 6pk Marrow Bone Frequent Purchase Program. Raw Chubs & Trial Sizes are excluded. Items are grouped according to Species, Size, and Food Type. Once you purchase any 12 items belonging to the same group you will receive one item, lesser than or equal to the least expensive item you purchased, for free. All of your purchases must occur at the same local pet food store or chain.