Hi all. Hope were all keeping busy?regarding the shower doors i swear by neat fairy liquid on a wet cloth you might need a bit of elbow grease depending just how bad it is. works gr8 for me,sometimes i just rinse after sometimes for a dryclean look i use a window squidgey (as i call it) thats the rubber blade the window cleaners use in the figure of 8.
give it a try you'll be surprised,quite a few of my customers when i first started with them,noticed the difference immediately on their shower doors.Good luck