Re: Scummy shower doors
Sounds like you've got mineral build up. I would recommend removing the door and laying it perfectly flat, deposit side up. flood the door with white vinegar and let it sit, the acid of the vinegar should loosen the deposits.
I too have battled mineral deposits and not found much that works other than prevention. Once you get the deposits removed or replace the doors, get yourself some Rain-X and apply as per the label directions. Rain-X will prevent the deposits from being able to stick. Reapply about once a month or so, depending on shower usage.
I suffer from CDO ... Its like OCD, but in alphabetical order, LIKE IT SHOULD BE!!!