I spent the last hour looking around for some info about activated carbon in general. I found that this guy has very good points. I went to many manufacturers sites, air filter sites, water filter sites, industrial filter sites, and clothing sites to get this info.

Activated carbon will only absorbe a certain amount of particles before it becomes uneffective. It then needs to be reactivated in extreme heat, like 1500 degrees. The house hold dryer won' t cut it.

I found that when wet it actually absorbes oxygen and can cause dangerous oxygen deficent conditions, Like a wet face mask.

I also found that activated carbon contains quarts which is a known carcinogen (sp) IE: it causes cancer.

Also when wet the activated carbons effectiveness is virtually squat. Chuck Adams agrees with this one too.

It is advised not to get it onto your skin, inhale it or ingest it.