I was looking at the dog food analysis site and it mentioned ethoxyquin. In the Premium Edge part it said that the food would get more stars if the company disclosed that the fish in their foods is not preserved with ethoxyquin. In the Chicken Soup part (earlier post) it says that Diamond has verified that the fish in their products is not preserved with ethoxyquin and that it was on their site. It is not on any of their sites (any more) and the posts are older so I decided to email Diamond to ask them. All they would tell me is that they (diamond) do not put any ethoxyquin in the foods but that whatever their suppliers use is "proprietary" (IOW none of my business I guess) and that was pretty much it. Has anyone gotten any different information? I am open to switching if I'm not confident about this food but there is nothing I can get locally without special ordering it and it all seems pretty expensive compared to Diamond brands.