All food in sleeping rooms shall be kept in vermin-proof containers.
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.
D.C. Mun. Regs. tit. 14, r. 14-1004