Kills 99.9% of bacteria (Streptococcus faecalis (Strep), Salmonella enterica (Salmonella), Staphylococcus aureus (Staph), Escherichia coli (E. coli)). 4-Pack cleans for 12 months. Prevents stains. Deodorizes with every flush. Repels tough stains: hard water, mineral and limescale. Product contains no phosphorus. www.clorox.com. www.smartlabel.org. how2recycle.info. Questions or Comments? Please call 1-800-227-1860 or write us at: Clorox Consumer Services, PO Box 24305, Oakland, CA 94612. For more product ingredient information, visit www.smartlabel.org. Also Try: Clorox toilet bowl cleaner clinging bleach gel. Environmental Commitment: Box made from 100% recycled paperboard (minimum 35% post-consumer). Environmental commitment: Box made from 100% recycled paperboard (minimum 35% post-consumer). Made in USA of global components.