(12 oz) Dishwasher Magic is an effective disinfectant against escherichia coli & salmonella choleraesus.  It safely and effectively removes lime scale, iron soap scum and grease left behind in your dishwasher, extends the life of your dishwasher, and improves cleaning performance. Dishwasher Magic is safe for plumbing and septic systems. Kills 99.9% of germs.