All good Dog Foods Hello, again I know that it will last longer than 2 weeks I work at a pet food store and we tell everyone to make sure that you either store it in a air tight container or make sure you roll up the bag really tight. All premium foods do not have preservative other than vitamin E & C and sometime they use rosemary. I store mine in a cereal container. And it seems to stay fresh for about 6 weeks, you can smell it when it goes bad. |