D.C. Mun. Regs. tit. 25-B, § 2007
2007.1 Except as specified in section 2003.2, sawdust, wood shavings, granular salt, baked clay, diatomaceous earth, or similar materials shall not be used on floors.
SOURCE: Final Rulemaking published at 56 DCR 5245 (July 3, 2009).