does baking soda and vinegar actually work to clear a drain I'm not sure I've never tried baking soda and vinegar to unclog a drain however I do know that this works even better than baking soda and vinegar we do first is to plug the Overflow of the sink and we use a plunger now you can use your toilet plunger to unclog the sink easiest past that the easiest way to unclog a kitchen sink or a bathroom sink is to just simply use a plunger baking soda and vinegar won't work if soda and vinegar does work for you then it means that you didn't have a bad block to begin with and you could have just used a plunger in the first place and saved your baking soda and vinegar