How To Get Water Spots Off Glass Cups. I found it at walmart. Hard water can coat your dishes in lime scale, which is a buildup of mineral deposits.
If stubborn spots still persist, gently rub them off with baking soda. Add the baking soda to the toilet bowl, followed by another cup of vinegar. If the white spots remain, fill the glass with enough vinegar or lemon juice to cover the spots.
I also use vinegar in my dishwasher.
Allow the vinegar to stand for one minute. Rinse the carafe thoroughly under cold water to remove soapy residue. The next day, i decided to put the machine to the test and loaded up a stash of glasses marked with water spots. Make a paste of baking soda and vinegar.