back when i was in salt water reefs & fish I use to buy carbon for the tanks it would take the smell out of the water in a day or two .it worked great ! then they made these carbon pads for ponds they also worked not as good but cleared the water & smell . I got this extra fine carbon dust for one of my special filters i could stir the tank were you could'nt see anything . In one hour or less you could drink the water it was so clean ! i was thinking about lineing my coat with the dust . has anyone ever looked & seen what kind of carbon is in the scent lok gear ?