Add 1/2 c. ammonia to a ceramic bowl and then add 1/2 c. isopropyl rubbing alcohol and 1/2 c. water to the bowl. Stir the contents of the ceramic bowl for about a minute.
Carefully pour contents of the ceramic bowl into a plastic spray bottle. Make sure that you do not spill the liquid anywhere else.
Spray cleaning liquid from the spray bottle onto the glass surface you want to clean and wipe clean with a soft piece of cloth or paper towel, until the surface is dry.
Prepare a mixture of 2 parts water and 1 part vinegar in a spray bottle. Vigorously shake the contents of the spray bottle until the water and vinegar are mixed together.
Liberally spray cleaning liquid from the spray bottle onto the glass surface you want to clean and spray a light coat of pure vinegar from another spray bottle.
Wipe the glass surface clean with large, circular wipes with a piece of soft cloth or paper towel. Continue to wipe until there is no residue left on the glass surface you are cleaning. When the glass air dries, most or all of the stains will have been removed. However, if some stains still remain, repeat this process as many times as you have to.