How To Use Caustic Soda For Unblocking Drains May 2026

Dealing with a stubborn, slow-moving drain is frustrating. Before you call a plumber, caustic soda (sodium hydroxide) can be a highly effective, inexpensive solution. However, it’s not a typical household cleaner—it’s a powerful chemical that demands respect.

When in doubt, call a licensed plumber. Burns and pipe damage cost more than a service call. how to use caustic soda for unblocking drains