2 cups rubbing alcohol (90%, not the 50%, if you use the 50% then use 4 cups).

1 Gallon distilled water (distilled has all the minerals removed making for a streak free finish) you won’t use the entire gallon as the other ingredients mixed in brings it up to more than a gallon.

Mix in a one-gallon plastic jug (I use a re-purpose milk jug or water jug)

Homemade all-purpose cleaner (recipe below).

Glass safe scrubby sponge or window scrubber.

Clean absorbent towels, I prefer cotton flour sack (not rinsed with fabric softener).

I also have used Dawn but since it is a concentrate use just one drop! Do not use any soap with moisturizers in it.

A tiny bit of soap is sufficient to do the job, if you use more and it leaves a residue. The purpose of the dish soap is to break the surface of the dirt and grease molecule so the water can wash it away.

Warm water with a couple drops dish washing liquid added (my favorite is Lemon Fresh Joy, not concentrate.

2 gallon bucket (or container of choice).

If you make a purchase after clicking a link I may make a small commission at no cost to you.

Best way to clean windows