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: Flush the drain with another pot of boiling water (or hot tap water for PVC) to wash away loosened debris. The Science Behind It How to Clean Drains with Baking Soda and Vinegar

Pour 1/2 to 1 cup of dry baking soda into the drain. Try to get as much as possible down into the pipe rather than just sitting on the grate.

: Pour 1/2 to 1 cup of baking soda directly down the drain.

Note: If you have PVC pipes, let the water cool for 3–5 minutes before pouring so you don’t damage the glue or the plastic.

The cleaning power of this method relies on a simple chemical reaction. When an acid (vinegar) meets a base (baking soda), they react to form carbon dioxide gas, water, and a salt.

For best results, follow these steps in order to maximize the chemical reaction within the pipes.