Toilet Bowl Cleaner, Disinfectant Kills 99.9% of household bacteria (Kills the following Household Bacteria: Salmonella, Escherichia coli, Staphylococcus aureus). Removes rust, lime scale & hard water stains. 33% more other leading national brands (Compared to 24 fl oz of the other leading national brands). Will not harm septic system. Disinfectant removes rust, lime scale & hard water stains. Questions? Comments? 1-800-448-5281. www.TheWorksWorks.com.