Dissolve two cups of baking soda in four cups of vinegar. Mix the solution thoroughly until all of the baking soda is absorbed into the vinegar.
If you have hard water in your home, cleaning your windows with plain water can leave behind troublesome stains when that water evaporates. If you notice white deposits on the glass and wood surfaces of your windows, you can use a homemade cleaning solution to get rid of those stains and keep your home looking like new.
Dip a sponge, cloth or paper towel in the vinegar and baking soda solution. Place it directly over the calcium deposits on the window. Hold the sponge, cloth or paper towel in place until the calcium deposits start to loosen. Remove the towel every few minutes, and scratch at the deposits with your fingernail. Continue until the deposits flake off easily when you scratch them. Leave the solution on the window for about five minutes, and then wipe it away with a soft cloth or paper towel.
Allow the window to dry, and then check for any remaining calcium deposits. It will generally take at least 10 to 15 minutes for the window to dry completely. Clean the window again with the vinegar solution until all of the calcium deposits are gone.
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