Does anyone have any information about the validity of this statement? "Keep in mind that once you open a bag of naturally preserved foods you allow air into the bag and the fat in the food starts to oxidize and go rancid. As a general rule of thumb, naturally preserved pet foods should be consumed within 3 or at the most 4 weeks from the time the bag is opened." Thanks for any insight. -Carla Save a life today! Visit the Ferret Friends Disaster Response International website. (http://www.worldaccessnet.com/~ferretma/ffdri1.html) [Posted in FML issue 2690]