With our move coming up very soon, I have been getting estimates for a move-out clean on the house. The first company, a national chain, quoted a small fortune ... to vacuum and dust an empty house! Once the sticker shock subsided, I pretty much decided that I will just do the cleaning myself, even if it might be stressful on me. I did, however, get an invaluable tip from the cleaning lady on how to maintain shower doors and walls, and keep hard water stains from building up. This tip is worth its weight in gold as far as I'm concerned!
Lemon oil. Dab it on a soft cloth and apply it to the doors and walls after cleaning the shower. The oil will make the water bead up, making it easy to wipe away with a squeegee after showering, and prevent stains from penetrating. What an awesome idea! She recommended using something other than Old English, but since that is all I have on hand I gave it a shot. It smells good, it polishes chrome, and gives a nice clean sheen to surfaces. I was so excited by this idea, I just had to share. (Oh, and I would recommend using the oil for light colored furniture, not the dark, if you have light colored walls.)