It is built around a special dual-quat formula that is effective on a wide variety of microorganisms. We are pleased to announce that the EPA has approved the efficacy claims of SSS DC Plus 2 Detergent Disinfectant (EPA No. 1839-83) for use against SARS-CoV-2, the cause of COVID-19, with a kill time of 1 minute. List N: EPA;s Registered antimicrobial products for use against Novel Coronavirus SARS-CoV-2, the cause of COVID-19.