Half a glass of bicarbonate of soda
Half a glass of vinegar
Pour the baking soda into the sink, making sure to get a good portion of it down the drain. Then also pour in the vinegar, which when it comes into contact with the bicarbonate will generate an effervescent action.
At this point you can take advantage and use a sponge to clean the internal surfaces of the sink: the combination of vinegar and bicarbonate is very effective in removing dirt, disinfecting and making the metal shine.
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