My window method has always been: 1. Spray glass cleaner and wipe with a terry towel 2. Spray wax/seal on another cloth, spread evenly and flip to dry. I rarely get streaks on the outside or inside of the jar with this method - yes I wax the inside of the jar lol. I have used a ton of different cloths in my search for the perfect glass cloth and in my opinion these Meguiars glass cloths are without a doubt the best finishing cloths I have ever used on glass. Absorbs excess product, leaving streaks and fluff on the surface.