So in a previous post I asked how I can get my cats to eat their own food.

I took their food away completely, other than feeding time. I give it to them in different rooms. But neither will eat! Butter only wants his old food, and Kiba just isn't interested. She takes a bite or two and has had enough. She normally will just pick away at it. I'm afraid they will stave to death it's been, I think, more than a day without them eatting much. How long before they get really hungry? I think Butter IS really hungry, but doesn't like his food. I gave him some of his old food and he ate it right up. So I put it mixed with his new food, and he doesn't want it then. *sigh*

Someone told me that he won't need this food for the rest of his life, because it would be bad for him. Is that true or not? (the food is dry c/d or canned c/d - he doesnt like either..but the canned food was only going to waste. ie: dried up and not good for eatting)