How To Unclog A Sink Using Just 2 Natural Ingredients -You'll need: 1 cup of white vinegar 1 cup of baking soda Sink stopper Boiling water -Steps: 1.Introduce Vinegar and Baking Soda -Pour the vinegar down the sink drain. -Sprinkle baking soda into the same drain. -Quickly seal it with the sink stopper. -Keep the stopper in place until the bubbling reaction has eased off. 2.Let It Rest After the bubbling has ended, let the sink sit untouched for approximately 30 minutes. 3.Rinse with Hot Water -