Unblocking Drains With Caustic Soda (100% Popular)

Caustic soda works brilliantly on organic clogs (fat, hair, food). But never use it with a plunger afterward—splashes can blind you. Never use it in a toilet or after commercial chemical drain cleaners (chlorine gas risk). And never, ever pour boiling water on top of it. Cold water only.

If you're not comfortable using caustic soda or prefer a more environmentally friendly option, consider the following alternatives: unblocking drains with caustic soda

The Sink That Stopped

The kitchen sink had been slowing down for weeks—a combination of cooking oil, coffee grounds, and soap scum. Plunging did nothing. Vinegar and baking soda had fizzed politely, then retreated. The drain snake was useless against the thick, dark sludge she could see just past the grate. Caustic soda works brilliantly on organic clogs (fat,