ROR is good stuff. It was recommended to me, so I went to get some. I didn't get it when I saw that claim, just out of principle, and also suspicion that someone who would say something like that might not care if there were something in it that would cause harm. I was given some with assurance of never having had any problem, and I have to say it works well. Too bad that they chose to make such an unethical claim- their product stands on its own merit.
That's the facet of advertising that makes me want to punt puppies.