Those Chem weapons have a rather short life span. After so many years they were no more effective then the shit Chem Lawn sprays on your yard.
That is simply not true.
Actually, Qua Si Modo, it is true. Trust me........I've spent the better part of 20 years as a member of the NBC Warfare team on every ship I've been on. Stands for Nuclear Biological and Chemical Warfare.
A lot of the chemical agents will start to dilute as soon as they hit the ground. And, if they are not PROPERLY STORED, they will end up losing their potentcy. Same thing will happen with CBR suits, they're useless after being out of the bag only a short time. Something along the lines of a couple months. If you pop a charcoal filter out of its storage can, it will only be good for 6 months. Same with some of the armor that is being used over there...........it also has an expiration date.
Incidentally, bleach is a really good agent for getting rid of CBR agents (Chemical, Biological, Radiological).
And...........if you don't have bleach, just wash it out with water, which will dilute it and make it safer to be around. Navy ships do the same thing with the salt water washdown system.