Homemade Windshield and Window Cleaners

The kind of commercial windshield washer fluid that is so convenient to buy at the store contains methanol. Methanol is extremely poisonous and is dangerous to breathe or touch. Less than a half of a teaaspoon can cause blindness and less that two ounces can kill a person.


On top of the dangers to the people using it, it causes environmental damage, by leaking onto the ground when we spray our windows with it. It also gets into the air as pollution. Billions of gallons of this washer fluid ends up in the environment every single year.

Here are directions for making your own windshield cleaning solution fluid.

  • 1 gallon of water
  • 1 oz. dish soap
  • 6 oz. rubbing alcohol
Rubbing alcohol acts as kind of an antifreeze for your windshield while driving.

Shake this all up in a jug, and then let the bubbles go down and pour into your windshild washer fluid canister to the fill line. Please mark the container with the ingredients so it will be easy to remember how to mix it up.

Another mixture is the following for during the times when you don't really have freezing weather to deal with:

  • 1 gallon of water
  • 8 oz. of glass cleaner
Here is a mixture for cleaning your windows at home in the house. Put the following in a spray bottle and spray onto a window and wipe off with a clean rag using long back and forth motions.
  • 2 quarts water
  • 2 Tbsp. white vinegar
  • 1 tsp. dish soap
  • 1/2 cup rubbing alcohol

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March 24, 20130 found this helpful

Methanol breaks down into water and co2 in a few days.


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March 24, 20130 found this helpful

Take a gallon jug (buy where you get refills of water) and do 3 quart water, 1 pint white vinegar, 1 TB earth friendly biodegradable soap (liquid for clothes or dishes). Swish it up and add water to top it off. Takes off the nastiest summer windshield bugs to the tree sap.

February 25, 20160 found this helpful

And How is rubbing alcohol (isopropyl alcohol) is better for the environment ? Better to use normal alcohol such as methylated spirit. (biodegradable) It works.


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