I've seen a lot of posts about the new Iams formula and Totally Ferret. I feed my ferrets Marshall food and they seem to be doing well. If anyone has any opinions about the quality of Marshall food please post because now I'm curious. All three of my ferrets have been raised on Marshall and I have tried TF with no luck - they won't eat it. Should I try again? Am I feeding them inferior food with Marshall? [Posted in FML issue 3005]