The kitchen sink is arguably the hardest-working fixture in your home. It handles raw meat juices, sticky syrups, coffee grounds, greasy pans, and soap scum. Over time, despite regular wiping, sinks can develop dullness, hard water stains, and unpleasant odors. While commercial cleaners are available, one of the most effective, non-toxic, and budget-friendly solutions is already in your pantry: distilled white vinegar .