Two types of mouthwash disrupt SARS-CoV-2, the virus that causes COVID-19, preventing it from replicating in a human cell, a new study suggests. The study in the journal Pathogens finds that, in a laboratory setting, Listerine and the prescription mouthwash Chlorhexidine disrupted the virus within seconds after researchers diluted it to concentrations that would mimic actual use. Further studies are needed to test real-life efficacy in humans. Researchers conducted the study in a lab using concentrations of the mouthwash and the time it would take to contact tissues to replicate conditions found in the mouth, says senior author Daniel H. Fine, chair of the oral biology department at Rutgers University’s School of Dental Medicine. The study found two other mouthwashes showed promise in potentially providing some protection in preventing viral transmission: Betadine, which contains povidone iodine, and Peroxal, which contains hydrogen peroxide. However, only Listerine and Chlorhexidine disrupted the virus with little impact …