I have fed both Merrick and Wellness. I am a Wellness fan. I used to be a Merrick fan until I had some discrepancies in the kibble between bags and some “weird” stuff in a few cans of their food. I won’t buy them anymore, sorry to say. However, this is just me. Others feed it and love it. I don’t use Wellness kibble, atm, because the size and shape is too big for one of my Cavaliers. I may try the kibble again soon because they do have some new small breed formulas coming out. I feed the canned daily.
