Prevention > chemical reaction. Always.
Real-life example: Many DIY users don’t wear proper gloves or goggles. A splash of caustic solution to the face means an emergency room visit. unblock drains caustic soda
Never mix the solution in a metal or aluminum bucket, as caustic soda reacts aggressively with these materials. How to Unblock a Drain with Caustic Soda: Step-by-Step Prevention > chemical reaction
The Truth About Using Caustic Soda to Unblock Drains – What They Don’t Tell You A splash of caustic solution to the face
Because sodium hydroxide can cause severe chemical burns to the skin and eyes, it is vital to use personal protective equipment, including heavy-duty rubber gloves and safety goggles. Adequate ventilation is also necessary to avoid inhaling fumes. It is critical never to mix this chemical with other household cleaners, as doing so can create toxic gases or violent reactions.
