Does your glass shower door have milky white spots all over it? Those spots are caused by residue from minerals in the water that has splattered on the door. It indicates that your household water has a high mineral content. Those mineral deposits are left behind when the water evaporates.

You can eliminate this problem at the source by installing a water softener, or you can find ways to reduce water-spotting--or at least clean them away--without buying equipment.

For starters, wipe up drips and drops when they occur, before they have a chance to form stains. Keep a squeegee in the shower and give the walls and door a quick wipe after each shower. This is a sure-fire method that almost always eliminates the problem.

If using a squeegee doesn't do the trick, clean up those pesky spots with a citrus-based cleaning solvent; these are especially effective against organic stains.

Note: If your shower is lined with marble, granite, or other stone tile, do not use a citrus-based cleaner--it may etch the finish on the stone.