Here is a recipe for what I think is the best glass cleaner ever . Also works great on fridge and/or other shiny surfaces. I use it even on woodwork. You will need : a one gal jug, in it mix 1 pint rubbing alcohol, 1/2 cup household ammonia, 1 teas dish liquid and enough water to fill the jug. A few drops of blue or green food coloring is a good safety measure so no one will mistake it for water. My father always told me to use crumpled newspaper if I wanted my windows to sparkle. Sure enough!! Good idea to use rubber gloves though as the newsprint will really get your hands dirty. Funny it cleans one thing and soils another. Ha Ha Ha