[Jenn H]

Doesn’t sound like you were implying THK wasn’t good. Sounds it just isn’t good for your dog.
Have you asked THK if they have made any changes to the formula or suppliers. Sometimes the most minor changes can be a big deal to some dogs.

Have you tried giving your dog pure pumpkin when they have diarrhea and when changing foods? Goat milk (raw if you can get it or THK has some) or some kind of probiotics also works well for runny butts.