Description : Will it kill the pipes if I pour boiling-hot liquid down the drain?
Last Answer : I guess it depends on what you are looking to clear in the way of a clog. Acid (vinegar) can attack the metal of the pipe. But the problem is that it would never touch the pipe at least not in ... calcium or iron deposits off the pipes, the vinegar will do great. Other than that, I'd go with Drano.