Nolvasan S Scented Disinfectant, 1 Pin (473 mL) is an antiseptic disinfectant used on inanimate objects to stop the spread of viral and bacterial infections. Nolvasan S Disinfectant uses chlorhexidine diacetate to aid in controlling the spread of canine distemper, equine influenza, gasteroenteritis, parainfluenza-3, and other viruses.