In this paper, researchers look at two studies performed at Utah State University (2020) and University of Geneva (2020) which showed that Xlear Nasal Spray destroyed 99.99% of the SARS-CoV-2 virus.
Ferrer, G., et al., (2020). A Nasal Spray Solution of Grapefruit Seed Extract plus Xylitol Displays Virucidal Activity Against SARS-Cov-2 In Vitro. BioRxiv.