I've found that good old vinegar and water works wonders! Mix equal parts in a spray bottle, spray it on, and wipe clean with a microfiber cloth. Works a treat on windows and mirrors. For tougher marks, I’ve sometimes used a clay bar meant for car detailing – sounds odd, but it gets rid of stubborn streaks. If you're into cars anyway, and want a fun way to relax, you could also check out Drift Hunters online. It's surprisingly addictive!
I've found that good old vinegar and water works wonders! Mix equal parts in a spray bottle, spray it on, and wipe clean with a microfiber cloth. Works a treat on windows and mirrors. For tougher marks, I’ve sometimes used a clay bar meant for car detailing – sounds odd, but it gets rid of stubborn streaks. If you're into cars anyway, and want a fun way to relax, you could also check out Drift Hunters online. It's surprisingly addictive!