The caustic soda began to react with the water and organic matter in the pipe, generating a massive amount of heat and gas. The toilet started to emit a loud gurgling noise, and the air around it began to fill with a noxious, acidic smell. The once-clear water now turned a murky brown, with bubbles forming on its surface.
That is when you look at the bottle on the hardware store shelf: . It promises a nuclear option for a messy problem. But before you pour, you need to understand that you are about to conduct a controlled chemical explosion in your bathroom.