Please choose the correct ending to complete the given sentence: Home and Garden: [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.

Ending1: 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. Ending2: Check for the following : [substeps] The brand of toilet cleaner that comes with the product. If you use more than one brand, choose the brand that has an easier time removing stains, off the label. Ending3: Some good brands of toilet cleaners include : [substeps] Pine ash ash barbecue ash teething powder suet pine tar very sooty-smelling toilet cleaner [title] Wear gloves or goggles when cleaning toilets. [step] Since toilet cleaners can come in many different shades, look for a cleaning solution made specifically for toilets that contains mercury. Ending4: [substeps] Check the label on the cleaner to find out if sodium hydroxide is safe. [title] See if the cleaner has aluminum powder in it.

Answer format: ending1/ending2/ending3/ending4