For a quick refresh, baking soda alone can handle most surface-level dirt and odors.

Before you start cleaning your sink with baking soda, make sure to:

Baking soda is amphoteric, meaning it can act as a weak base. Many common sink contaminants—specifically fatty acids found in kitchen grease and body oils—are acidic. When baking soda interacts with these acidic compounds, a mild neutralization reaction occurs. This reaction turns insoluble fatty acids into soluble salts (soap), effectively emulsifying the grease and allowing it to be wiped away with water.

If your sink has stubborn stains or mineral deposits, the chemical reaction between baking soda and vinegar can help dissolve them. How to Clean Your Kitchen Sinks and Drains - Complete Guide

She poured a half-cup of white vinegar slowly, carefully, down the drain. Then she poured another quarter-cup into the first basin, where a thin layer of baking soda paste remained.

The rest of the day passed quietly. She read a chapter of her book. She called her niece in Oregon. She watched a goldfinch peck at the feeder outside the window. But every time she passed through the kitchen, she glanced at the sink. It seemed to glow, even in the fading afternoon light.

She put the baking soda back in the cabinet, next to the vinegar. She threw away the half-empty bottle of toxic gel. She washed her hands, dried them on a tea towel, and sat down with her tea.

Here's a simple, step-by-step guide to cleaning your sink with baking soda:

She scrubbed for ten minutes. Her hands, gnarled with arthritis, ached a little, but she didn’t stop. She scrubbed the second basin the same way. Then she took the vinegar.

Remove all dishes and food scraps. Rinse the basin with warm water to leave it slightly damp.

Sodium bicarbonate proves to be a scientifically sound and highly effective agent for cleaning domestic sinks. Its dual nature as a physical abrasive and a mild alkaline cleaner allows it to tackle the majority of sink-related hygiene issues—including grease, stains, and odors—without the environmental or health risks associated with harsh chemical solvents. By adhering to the methodologies outlined above, users can maintain a sanitary, odor-free, and visually polished sink using a readily available household staple.