D.C. Mun. Regs. tit. 20, § 729
729.1 Effective January 1, 2012, no person shall sell, supply, offer for sale, or manufacture for use in the District of Columbia any solid air fresheners or toilet/urinal care products that contain para-dichlorobenzene.
729.2 Solid air fresheners or toilet and urinal care products that contain para-dichlorobenzene and were manufactured before January 1, 2012, may be sold, supplied, or offered for sale until May 1, 2012, so long as the product container or package displays the date on which the product was manufactured, or a code indicating such date, in accordance with § 732.1 through 732.6.
729.3 Any person who sells or supplies any solid air freshener or toilet and urinal care product that contains para-dichlorobenzene shall notify the purchaser of the product, in writing, that the sell-through period for the product will end on May 1, 2012, provided, however, that this notification must be given only if both of the following conditions are met:
(a) The product is sold or supplied to a distributor or retailer; and
(b) The product is sold or supplied on or after January 1, 2012.
SOURCE: Final Rulemaking published at 51 DCR 3879 (April 16, 2004); as amended by Final Rulemaking published at 51 DCR 10781 (November 26, 2004); as amended by Notice of Final Rulemaking published at 58 DCR 11286, 11316 (December 30, 2011).