The mixture will immediately heat up. Let it stop bubbling (about 2–3 minutes).
Pour and WaitCarefully pour the mixture into the toilet bowl. Avoid splashing. Let the solution sit for 20 to 30 minutes. During this time, you may hear fizzing or see some bubbles; this means the chemical is working to dissolve the obstruction. how to use caustic soda to clean toilet
If you follow the steps above—wearing your PPE and adding the chemical to cold water—you can clear the toughest blockages without the expense of a plumber. The mixture will immediately heat up
Frequent use can kill the beneficial bacteria in your septic tank that break down waste. If you are on a septic system, use caustic soda sparingly or look for septic-safe alternatives like enzymatic drain cleaners. Avoid splashing
Before we even open the container, we need to talk about safety. Caustic soda is highly corrosive. If it touches your skin or eyes, it causes severe chemical burns. If mixed with the wrong chemicals, it can create poisonous gas.
The plumbing in Arthur’s century-old cottage was as stubborn as a mule. When the guest toilet finally succumbed to a deep, impenetrable clog, Arthur skipped the plunger and went straight for the "nuclear option" sitting in his shed: (sodium hydroxide).