My buddy's in Wisconsin are soy and dairy farmers. They tryed it and said the cows had to eat more and were more prone to infection. Not only that they had to eat more than what they produced to the net gain wasn't enough to of set the extra food. Its almost not used in the us and its illegal in Canada. Monsanto is just pissed it doesn't really work that well and is trying to extract the last of the profits. All milk from Wisconsin and more other northern states is rgbh free because of the extra immune risk from the cold and other environmental stuff.