Our dog was diagnosed with lymphoma in January of 2011. We needed to change her food to a grain-free variety, and what worked the best was Wellness Core original formula (we use both canned and dry). Unfortunately for us, stores in our area carry this variety only occasionally. PetFlow solved the problem - and have saved hundreds of dollars in gas costs since we do not have to drive over 30 miles to get her food. It arrives just as we've scheduled it, in perfect condition. the shipments are easy to adjust in terms of ship date and quantities.