Preservatives: Taste of the Wild specifically states on their site that they source all of their protein meals from sellers who do not use ethoxyquin as a preservative. (dogfoodselector.com)
Not surprisingly, the second study, completed in 1996, found no problems associated with ethoxyquin in pet food. (littlebigcat.com)
Diamond Pet Foods, which makes 4Health for Tractor Supply Company, has stated that they only use fish meals that are free of ethoxyquin as of 2010 and this seems to be true with food such as Taste of the Wild and other products they make. (dogfoodinsider.com)