Please choose the correct ending to complete the given sentence: Home and Garden: [header] How to clean an enamel bathtub [title] Mix hot water and liquid dishwashing soap. [step] Get out a small bucket and pour 2 tablespoons (30 ml) of gentle dishwashing soap into it. Use a dishwashing soap that will cut through grease and grime.

Ending1: The water should be about 80 to 100% pure, as dish soap is fine for removing grease and debris from enamel toilets. [substeps] Make sure the water is hot enough for you. Ending2: The water in the bucket must be somewhat dirty so every time you wash dishes, you'll use cleaner or cleanser. [substeps] Machine clean is a good choice as it removes surface dirt and grime that causes rust to build up on your enamel. Ending3: Pour 1 gallon (3.8 liters) of hot water into the bucket. Stir the mixture until it's soapy and combined. Ending4: Keep mixing the soapy solution to get soap that doesn't irritate the enamel. [substeps] You can create your own dishwashing soap by soaking your tub in hot water for a few minutes.

Answer format: ending1/ending2/ending3/ending4