Unstopping a Clogged Drain 1/4 cup baking soda 1 cup white vinegar 1 large pot of boiling water (I removed my pop-up drain stopper first.) Carefully pour the baking soda down the drain. Follow with 1 cup of white vinegar. Let it stand for about 15 minutes. Then I poured a pot of boiling water down the drain
How to unclog a sink drain without harsh chemicals, and IT WORKS! 1/2 cup baking soda, 1/2 cup vinegar, Let it bubble 15 minutes and chase it with a pan of boiling water. Light plunging needed on tough clogs. I just tried it on my kitchen sink and it cleared a tough clog in 20 minutes. I'll never buy drain opener again.