Quickly cover the drain opening with a plug or a damp cloth. This traps the expanding foam inside, forcing the reaction deeper into the pipe rather than letting it bubble back up.
Bring 2–4 cups of water to a rolling boil. unclog drain with baking soda
Pour 1/2 cup of baking soda directly into the drain. Use a spoon or your finger to push any dry baking soda that sticks to the sides down the opening. Quickly cover the drain opening with a plug or a damp cloth
Immediately pour 1 cup of white vinegar down the drain. You’ll hear fizzing and bubbling – that’s the chemical reaction breaking down organic matter. Pour 1/2 cup of baking soda directly into the drain
Let the mixture work. For tough clogs (e.g., hair and soap), wait 30 minutes or even overnight. You’ll hear occasional fizzing.
Remove the cover. Boil another 2–4 cups of water (or run the hottest tap water for 1–2 minutes) and flush the drain thoroughly.
