I am waiting... drawing no conclusions here without further testing. Just trying to make the point that even seemingly "innocuous" agents can have ominous applications. And of course I agree, bleach, pesticides, et.al, utilized in the conventional means, cannot/need not be banned! Persons having the intent of causing deliberate harm through the use of these agents, should be banned. As I said, it's a matter of concentration, intention and application. In this case, I found that the circumstances surrounding their discovery, e.g. where they found, having been hidden in trenches, etc. lent intrigue to the calculus.