In article ,
Brian wrote:

I have a problem with soap scum all over the shower doors. Part of the
problem is from the rotten
well water here which when combined with the soap gets hard as a rock. I've
tried every useless
bathroom cleaner on the market and nothing touches this crust. Does anyone
know of a chemical that
will cut the scum ???? I've tried every brand of bathroom cleaner as well as
white vinegar..... HELP
!!!

A well-aimed brick, followed by a new piece of glass should do the
trick. Then do two things: Switch to a liquid shower soap (very
convenient because a tablespoonful in a wet washcloth will do your whole
body, and does not leave scum like bar soap) and squeegee the shower
(takes 30 seconds) when you're done.