Hi Zach-
I am not familiar with Primal turkey and sardine. But, I’m all in favor of boosting kibble with a topper. Have you checked out Steve Brown’s website, See Spot Live Longer? He has written a few books on home made food and dog nutrition. He also has a download that is only $2.95 that spells out how to supplement kibble with fresh and raw foods. Such as eggs, sardines, veges, fruits and organs. I top my pups kibble with either canned, dehydrated, frozen raw nuggets, eggs or sardines every meal. Have fun with it!
