Caustic Soda Blocked Sink

| Method | Best for | Safety | |--------|----------|--------| | Plunger | Most clogs | Very safe | | Drain snake/auger | Hair or solid objects | Safe | | Baking soda + vinegar | Mild grease/hair | Safe | | Enzyme cleaner | Slow drains, maintenance | Safe (septic-friendly) | | Caustic soda | Stubborn organic clogs | Risky |

) or lye—is a powerful alkaline chemical frequently used to dissolve stubborn organic blockages in kitchen and bathroom sinks. While highly effective at breaking down fats and hair, it is extremely corrosive and requires strict safety protocols to prevent personal injury or permanent damage to your plumbing. How Caustic Soda Unblocks a Sink caustic soda blocked sink