Attacks tough stains + odors. Bright clean! 4 In 1: Odor eliminating technology; Lasting freshness; Powerful clean; Fights dirt & odors. With oxi powder. Purex Odor Stop with Oxi Powder is specially formulated with powerful odor elimination technology to fight even the most stubborn odors and keep your clothes smelling fresh for up to 30 days out of storage. Plus, with oxi powder, this formula provides even more powerful cleaning performance (Vs. Regular Purex) to fight tough stains while keeping your clothes looking just as bright as you'd expect using Purex laundry detergent.