How do you know what the publishers say the stones are if you won't even take one hour and a few bucks to read the books!
By your logic, no book in the world is trustworthy because somebody made money on it. I think that is a lazy way out of ever having to learn anything new.
The stones can be gallstones, and intrahepatic (from the liver) stones as they are referred to in the medical literature found in Johns Hopkins University medical library. You would know this if you read Andreas' book.
But you haven't really looked into this enough, and didn't get the right instructions and had a half hearted flush and didn't get results and you come on here and use the word "Useless" to discourage others from doing it? I don't get you.
Your approach is the opposite of science. You don't even have enough intellectual curiosity to read a simple book, and if you did read and apply the information, you may even get some healing.