Please choose the correct ending to complete the given sentence: Home and Garden: [header] How to clean rust off steel [title] Use a potato and dish soap on light rust. [step] Cut a potato in half with a knife. Drizzle dish soap onto the cut end of the potato.

Ending1: Rub away rust by firmly scouring rusted areas with the soapy potato. This method can be messy; work over a sink or outside for easier cleanup. Ending2: Then, dab the rust off with a damp cotton cloth or potato masque and a rust remover. [title] Use an ice cube for larger rust stains. Ending3: If there is a hard spot on the potato that is hard to scrape off, this should be enough to clean the rust. If it does not, repeat the process with another potato. Ending4: You will want to change the space around the cut edge every few months to keep it cleaner. [substeps] Don't apply your potato or dish soap directly over a cut wound.

Answer format: ending1/ending2/ending3/ending4