If a decision is made to use this chemical, professional-grade safety measures are mandatory:
Here’s a for using caustic soda (sodium hydroxide) to unblock drains. using caustic soda to unblock drains
Understanding the Use of Caustic Soda for Drains: Risks and Safety If a decision is made to use this
Mixing caustic soda with other household cleaners, particularly bleach or acidic descalers, can create toxic chlorine gas or cause violent chemical splashes. Essential Safety Protocols particularly bleach or acidic descalers
The chemical reaction between caustic soda and water is exothermic (produces heat) and can release fumes that are harmful if inhaled.