FermActive is based on formic acid, propionic acid and orthophosphoric acid. Formic acid reduces water (pH<4) and acts against bacteria. Propionic acid has a direct effect on moulds. Orthophosphoric acid helps to low the pH. It is a synergistic combination of acids with a powerful antimicrobial activity that reduces the growth of pathogenic bacteria (such as Salmonella spp. and E. coli) and moulds.