Well, I (unknowingly) bought a carton of FSC-marked Eagles here in NM. By the 2nd pack, the back of my tongue hurt. It wasn't until a customer at work demanded I find him a pack of non-FSC cigarettes that I learned about this stuff. I bought several packs of non-FSC Sonomas, and my tongue quit hurting. Smoked a pack of FSC Eagles when the non-FSC Sonomas ran out, and the pain (and redness) returned. Guess I'll be joining the ranks of non-smokers real soon :(