All preparations used for the extermination of vermin, such as sodium fluoride, shall be conspicuously colored and kept in containers clearly labeled "POISON."
Containers of poison shall not be placed with receptacles containing spices or condiments or other food substances.
No article, polish, or other substance containing any cyanide preparation or other poisonous material shall be used for the cleansing or polishing of eating or cooking utensils.
D.C. Mun. Regs. tit. 14, r. 14-1114