D.C. Mun. Regs. tit. 25-B, § 2212
2212.1 A tracking powder pesticide may not be used in a food processing operation, except as specified in section 2212.2.
2212.2 If used, a nontoxic tracking powder such as talcum or flour may not contaminate food, equipment, utensils, food-contact surfaces, or food-packaging materials.
SOURCE: Final Rulemaking published at 56 DCR 5245 (July 3, 2009).