I add methylated spirit to water and it comes out sparkling
Windex or white vinegar and NEWS PAPER. The news paper is the secret to lint free, streak free windows.
I like Windex and newspapers.
I love hot water on a washcloth washing the windows and squeegee it. Sounds weird but works great.
I like to use a mixture of 50/50 alcohol and water. I use this after using hot water and a soft cloth to get the worst dust off, then use the alcohol/water mix and wipe dry, though it doesn't take long because the alcohol evaporates quickly.
Windex & other brands of window cleaner never seem to work for me. It always leaves a smear that is hard to remove. I use Windex on the faucet & sometimes a window but not a mirror. Hot water and paper towels work best.