Kills 99.9% of germs (Kills Germs: Staphylococcus aureus (Staph), Salmonella enterica (Salmonella), Influenza A2 virus, Rotavirus, Candida albicans). Kills Covid-19 virus (Kills SARS-CoV2 on hard, nonporous surfaces). Coats the bowl to dissolve stains. Destroys tough stains. Contains no phosphorus. The only toilet bowl cleaner with Clorox bleach. Clings and rinses away for a sparkling clean.