I have a well and the water tends to leave a rusty color on everything, including my sun room windows. They look like they are tinted. I have tried everything. What will clean this rusty residue off my windows?
At one time I owned a janitor service. When there was anything on a window that was hard to remove, I would use fine steel wool, sometimes it helps to wet it slightly. I'm not talking about steel wool soap pads. You can find fine steel wool at hardware stores like Home Depot. This is a lot of work, so only go to this method if you can't find a cleaner that will work for you.
I am not much help with this. I used to have shower door and I swore I would never have them again. I now have a shower curtain that I can replace much more cheaply than shower doors when the begin to look bad.
Bar Keepers Friend, as someone suggested is an excellent product. I use it also on my cooktop stove.