Don’t Call The Plumber Just Yet: 9 Ways to Unclog a Kitchen Sink Drain Boiling water. This is the easiest and least expensive solution of all, which makes it the best one to try first. Disposal. Salt and boiling water. Vinegar and baking soda. Baking soda and salt. Plunger. P-trap. Plumber’s snake. Click to see full answer. Also know, what is the best thing to use to unclog a kitchen sink?Pour one cup of fresh baking soda down the drain, followed by one cup of white vinegar. Place a rubber stopper or other sink hole cover over the drain opening. Wait 15 minutes to allow the vinegar and baking soda to unclog your drain, Then take out the drain cover and run hot tap water down the drain to clear the clog.Similarly, how do you unclog a sink naturally? Use the vinegar and baking soda method. Remove your drain cover and pour half a cup of baking soda directly down your drain. Follow the baking soda with half a cup of distilled white vinegar. Allow the mixture to bubble and fizz in the drain for up to 15 minutes. Accordingly, how do you unclog a sink with standing water? Steps Clear all the blockage from the drain. Remove all standing water from the sink or tub. Clear the overflow drain if there is one, then plug it with a rag. Begin plunging the drain, pushing in and out. Run hot water down the drain for 5-10 minutes to clear any other blockages. Why is my kitchen sink backing up?So any clog or blockage within that main drainage line can cause water to backup and overflow into your kitchen sink. These clogs typically occur in four places: the dishwasher, the garbage disposal, the sink, and the air gap.