Your household glass cleaner won't cut it for hard water stains.

Apply vinegar to the stain, sprinkle with baking soda, let it bubble, then scrub away. Mix borax with water to create a paste, apply to stains, let sit, then wipe clean. For stubborn stains, use ...

In the scope of housework, hard water stains are high on the list of public enemies in my home. Because we live in a place with hard water, they're devilishly difficult to remove (and incredibly quick ...