Well, I had a good test with Rootsies this morning. Carter had a squeaky tummy this morning and he does not eat when this happens. He wanted his cookie which he took a put it by a bed. Neko promptly ate it. I put some Rootsies on both their breakfast. He came up ,smelled the bowl and started eating. He ate the whole bowl! Then I gave him Neko's cookie which he ate.
Will be curious to see what his next poop looks like, typically they are really soft like pudding.
So far we are loving Rootsies.