I saw a bag of Manna Pro Aureomycin medicated crumbles when I was at co-op getting chick vitamins. Has anyone ever used this- I think it may be a new product because I have never seen it before. It caught my eye because it is for chicken, turkey, and ducks plus other barnyard animals like cows. I don't know if its just a sm bag of feed or you mix the product with your feed? Co-ops normal medicated feed can't be fed to ducks so i was wondering if this is an alternative feed?