Fill a 5-gallon bucket with 3 gallons of water. Add 1 cup of ammonia and 2 tablespoons of Palmolive dish soap.
Swish the mixture around with your hand to mix it.
Scrub the window with the mixture in a circular motion with the window scrubber or sponge. Avoid scrubbing too closely to the window seals, as they can trap water, leaving it to drip after you have already finished.
Hold the squeege at a 45-degree angle and make overlapping horizontal strokes across the window, starting at the top and working toward the bottom. The edges may still have soapy mixture on them.
Swipe the squeegee downward from the top of the window to remove any leftover soapy mixture and leave a clean, streak-free finish.