Update on Grain Free Food

I have recently switched our cats over to a mixture of Orijen and Serengeti and so far they seem to like it. So I will keep them on that. The website I order from has a special sale this weekend for a 15.4 pound bag for 31.99 instead of 36.99.
I also bought a few wellness canned food (grain free) and Lexi just gobbled it up. At this point, I think she will eat ANYTHING! Tedi, my 14 year old, who I really want to eat it, just kind of looked at it and smelled it. How do I get him to try it? I'm willing to work at it as long as I have to.
Luna and Maya picked at it some and I think with time, they will eat more. Any suggestions?

For your older cat that won't eat it, try mixing it with his current food and slowly put more of the new stuff and less of the old stuff. He most likely will adjust to it with no problems.