I tried all the usual sources (Smartpak, Farmvet, Dover, SLT, Valley Vet, Jeffers, etc.) Either they carry no Uckele products or they carry some but not the Vitamin E/Selenium products. Why are Uckele products so hard to find? Closest "local" source is 30 miles away in a direction I never go, at a feed store I've never heard of. I'd love to try this product if I could find it!