D.C. Mun. Regs. tit. 19, r. 19-1560
All wildlife in the District is protected, and none shall be killed or otherwise taken except in accordance with this chapter.
Nothing in the chapter shall be construed to prohibit owners of private property from taking any action as may be reasonably necessary to protect their property or person, by humane means, from rats, mice, moles and other depredating wildlife; provided, that any action taken, by a property owner under the provisions of this subsection, shall be confined to that owner's property.
Notwithstanding the provisions of § 1502.2 of this chapter, persons responsible for the care of property of the government of the United States or the District may take any action as may be necessary to capture or destroy wildlife causing annoyance to the public, creating a nuisance, or destroying or damaging property.
D.C. Mun. Regs. tit. 19, r. 19-1560