The offensive use of living organisms ( such as anthrax ) is considered biological warfare rather than chemical warfare ; however , the use of nonliving toxic products produced by living organisms ( e.g. toxins such as botulinum toxin , ricin , and saxitoxin ) is considered chemical warfare under the provisions of the Chemical Weapons Convention ( CWC ) .
However , the use of nonliving toxic products produced by living organisms ( e.g. toxins such as botulinum toxin , ricin , and saxitoxin ) is considered chemical warfare under the provisions of the Chemical Weapons Convention ( CWC ) .