I just saw this thread and since folks may still see it, I wanted to give a breeder point of view. I do breed and although I offer the first year with no strings, I offer a second year if they use NuVet for their pet. The reason is that it's the best vitamin available for dogs and it can help them avoid problems just like a person taking good vitamins will help them avoid even a genetic condition their family displays. Vitamins are very important. Any owner that cares about their pets longevity and ongoing health will spend a few bucks on good vitamins like these to help them enjoy life better and longer. I would not hold it against a breeder too much, although they should offer at least some guarantee even if you do not get the vitamins.