Though they can be toxic in large amounts, they do work to effectively clean grout. [substeps] You may look for common brands of toilet cleaner at your local hardware store or in the cleaning aisle at your grocery store.
[header] How to clean grout with toilet cleaner [title] Look for a toilet cleaner that contains sodium hydroxide. [step] Many toilet cleaners contain sodium hydroxide and sodium hypochlorite. These two ingredients help to remove stains and grime on porcelain or tile surfaces as well as grout.