I used to use this in my ferret feed mix but last summer or so they changed the formula and my boys quit eating it. I would fill their bowl with a kibble mix: Totally Ferret, Sheppard and Greene, PEKC and The Ferret Store Premium. Sometime last year I bought a bag and mixed it into the blend but noticed that the PEKC kibble always remained behind. I asked around and found out they reformulated. The same thing happened to the Ferret Store kibble just a few months ago. Right now I am mixing just TF and S&G and looking for a 3rd brand to mix in. Anyway, it's great food for ferrets if they will eat it. robg [Posted in FML issue 4832]