SAN DIEGO--(BUSINESS WIRE)--PURE Bioscience (NASDAQ: PURE), creators of the patented silver dihydrogen citrate (SDC) antimicrobial, today announced that one of its distributors, Mid-Continent Packaging, Inc., is supplying the SDC-based BioSilver® disinfectant to several private school bus companies in the New York City area for use in routine disinfection of busses.