Therapeutic antimicrobial compositions and methods for providing enhanced immediate and residual anti-viral and antibacterial efficacy against rhinovirus, rotavirus, coronovirus, respiratory syricytial virus, Gram-positive bacteria, Gram-negative bacteria and combinations thereof. More specifically, therapeutic antimicrobial compositions comprising an organic acid or organic acid mixture and a short-chain anionic surfactant having at least one of a large head group； a branched alkyl chain and an unsaturated alkyl chain, and therapeutic methods of use thereof.
