PLEASE, please don’t switch him to Blue. There have been a huge number of people that have been reporting that their dogs got diarrhea on Blue and some of them have been on Blue for a while but opened a new bag and BAM.
What you should do is try adding a particular protein, like fresh chicken, to the ID for a bit and see if he reacts to it. Then try beef and so on. Do the same with the major carb sources. After you know a few things your dog can tolerate, then go looking for a new food. I hate Hill’s foods for their low quality ingredients, but they do have their place, temporarily. If you really need to get off Hill’s now, try an easy to digest food like NutriSource.
If your dog has IBD, you may have to watch fiber levels. Some IBD dogs are set off by too much fiber, some are helped. Some are helped by the addition of coconut to their diet. I’m sorry I have no definite answers for you. You are going to have to experiment and see what works for your dog.
