Bicarbonate of soda is a mild alkali. When it meets an acid (like vinegar), it creates carbon dioxide gas. That fizzing action acts like a scrubbing brush inside your pipes, dislodging grease, fat, and food particles without damaging your plumbing system.
Bicarbonate of soda is cheap, safe for your family, safe for your septic tank, and incredibly effective. Next time your sink burps up a piece of spinach from last week's dinner, put down the toxic gel and reach for the orange box. bicarbonate of soda to unblock sink