Why shouldn't you use baking soda and vinegar to unclog a drain?

Why You Should Skip Baking Soda and Vinegar for Clogged Drains

It is one of the most widespread DIY hacks on the internet: pouring baking soda followed by vinegar down a sluggish drain. The instant fizzing reaction looks impressive, convincing many that it is actively scouring away grime. However, relying on this viral trick is largely ineffective and can sometimes do more harm than good to your plumbing system.

The core issue comes down to simple chemistry. Baking soda is a base, and vinegar is an acid. When mixed, they immediately neutralize each other, leaving behind mostly saltwater and carbon dioxide gas. While this chemical reaction creates noticeable pressure in a closed container, pouring it into an open drain allows the gas to escape freely out the top. As a result, there is insufficient pressure to push a stubborn obstruction made of hair, soap scum, or grease down the pipe.

Furthermore, repeated chemical reactions or heat from boiling water can weaken older pipes and PVC joints over time. Instead of relying on fizz, stick to proven methods. A simple plunger or a drain snake provides the physical force needed to clear blockages safely without risking your home's plumbing.