BARRIER II is a no-rinse quaternary sanitizer/disinfectant which can be safely used as a final sanitizing rinse for all surfaces. Also designed for use in hospitals, nursing homes, hotels, schools where disinfection is of prime importance. BARRIER II, when used on environmental, inanimate, hard non-porous surfaces at 0.7 oz/gal of water for a 10 minute contact time exhibits effective viricidal activity against Influenza A2/Japan (representative of the common flu virus), Herpes Simplex Type 1 (causative agent of fever blisters), Adenovirus Type 5 (causative agent of upper respiratory infections), Vaccinia virus (representative of the pox virus group), Human Coronavirus (ATCC VR-740, Strain 229E), HIV-1 (Human Immunodeficiency Virus Type 1), Hepatitis B virus (HBV), Hepatitis C virus (HCV), and Human Coronaviruses, SARS-CoV-2, the cause of COVID-19.