To deodorize and clean the drain, pour ¼ cup of baking soda directly into the drain opening, followed by ½ cup of white vinegar. The resulting fizzing reaction (carbon dioxide release) helps dislodge organic buildup. After 5 minutes, flush with hot water. Use the old toothbrush dipped in baking soda to scrub around the faucet handles and drain rim.

Sprinkle baking soda generously over all damp surfaces of the sink, including the bottom, sides, and back ledge. For a standard double-basin sink, ½ cup is typically sufficient. The baking soda will form a paste-like consistency with the residual water.

The kitchen and bathroom sink are among the most utilized fixtures in any home, accumulating grease, food residue, soap scum, hard water stains, and bacteria. While commercial chemical cleaners are readily available, they are often expensive, environmentally taxing, and potentially hazardous. Sodium bicarbonate, commonly known as baking soda, offers a non-toxic, abrasive, and deodorizing alternative. This paper outlines a safe, effective, and step-by-step method for cleaning sinks using baking soda, often in conjunction with natural co-agents like white vinegar and lemon.