Ordinary glass cleaner like Windex contains alcohol, which really cleans the
glass, and ammonia, which cuts the grease. If you're like me you don't have
room in your toolbox for a spray bottle. You need rubbing alcohol in your
tool box anyway, so just use this as a pour one glass cleaner. You won't
miss the ammonia--it leaves streaks anyway. You can mix water with rubbing
alcohol 1:1 to make it go further.