Yeah i would look and see what the ingredients are. There are a lot of dog food options. So if was say fish based, I would try another fish based one. Dog food is so weird. Like DH and I both think that ToW smells icky. Not rotten but not good to us. But the girls like it. A lot. I stuff it in a toy and they go after it like it's a treat. But not so much that if I put it out and they aren't hungry, it sits. Which is good as I don't want Cosmo overeating.
I did offer them some Blue at my parents house as they just switched to that. My girls didn't want anything to do with it. Parents dogs wanted the ToW though. I have thought about trying a different flavor on them....there is a bison/vension one, a fish one, the fowl one which is what we are on and maybe one more. But I just don't think that I want to mess with something that is working.
before I switched them, I did buy a small little bag to see if they liked it or not. And spent well over a week switching it gradually.