I tried the new F&S Signature food last April. I was shipped the 2- twenty pound orders in 8 -five pound bags. I didn't need it right away. I think it was in June that I opened the first bag. It had a mild rancid odor. As it was out in a bowl it seemed to go away and the ferrets ate it. Just a few of the ferrets really liked it, the rest of what I feed is Totally Ferret, all three kinds. So eventually I had opened other bags and all had the same problem. I finally called recently and the call center person did not know of any other reports about this problem. So I am asking if any one else has noticed this. My friend Jo Ann uses it exclusively and says she's not had a problem. The other possibility is that I live at 3500', I swear this air oxidizes stuff faster. I have seem plastic items out in the garage that will crumble after a few years exposure to the air but not to light. But that doesn't explain why the food smelled bad when I opened it after being in a sealed bag. I would appreciate any comments, especially from those who live at higher altitudes. F&S is sending me one new bag to try out and see how it is. Carol J. Owens Ferret Friends,Inc. Tucson AZ [Posted in FML 8072]