Well, he was <b>raving</b> about it before. So I'm thinking he might be disinclined to believe that site.
All I had to go on was his word, and the only believable bit of it (I was skeptical at first) was that there was a lot of residue extracted... well, that site explains <b>that</b>. But he had been talking about how he hears better afterward and whatnot - so, that's why I'm guessing he'll be in denial.
