On Wed, 2 Nov 2016 12:28:24 -0700 (PDT), wrote:

But it can hurt the pipe, read directions didn't it say not to use on toilets? I had clog in sink PVC pipe and used the acid but said not to use in toilet!??? The pipe is old metal so????

You typing to me or are you typing to Danny D? Or you picked a thread
several years old and jumped in part way?