This "science experiment" approach is the most popular way to refresh a slow-moving sink. How to Clean Drains with Baking Soda and Vinegar
Unlike caustic cleaners, it won't corrode metal or melt PVC pipes. Step-by-Step: The Classic Baking Soda and Vinegar Method drain cleaning with baking soda
Then came the whisper.
First, a cup of baking soda. It cascaded into the dark maw of the drain like a dry, alkaline snow. It settled in the murky water, turning the surface into a cloudy, alien landscape. Clara imagined it drifting down into the pipes, coating the slime, the hair, the coagulated fat of a hundred stews. This "science experiment" approach is the most popular