> arsenic is a naturally occuring compound Small edit: it's an element, not a compound. Compounds can be denatured to render them harmless, or at least less h

> arsenic is a naturally occuring compound Small edit: it's an element, not a compound. Compounds can be denatured to render them harmless, or at least less harmful. Bleach left out in the sun becomes slightly salty water. Arsenic is eternally harmful.