How To Unclog A Bathroom Sink With Baking Soda And Vinegar. Use a sink stopper to plug the drain. You start by flushing your drain with boiling water…just pour it right down the drain.
Pour a pot of boiling water over the drain. This solution does not work on completely blocked drain. Pour the ½ cup of baking soda down the drain first.
The first thing to do is pour the boiling water into the drain to soften the pipes a bit.
You start by flushing your drain with boiling water…just pour it right down the drain. Pour the ½ cup of baking soda down the drain first. A smelly bathroom sink drain is a common problem, as odor, residue and bacteria accumulate regularly in the drain. Baking soda and vinegar make a great bathroom scrub as well, and even lift calcium and lime deposits!