I don’t wash our windows at home often enough, mostly because I’m lazy, but partly because I always end up with streaks. On the outside, I use a window washing soap diluted in a bucket of water and inside I use Windex.
This year I decided to try something different. I searched around for a bit and tried:
- 3 parts distilled water
- 1 part isopropyl alcohol
- 1-2 drops of dish soap
I applied that with a microfiber cloth and then dried the windows with a second. It worked amazingly well! I still haven’t seen any streaks. In fact, it worked so well that I tried it on the car windows and had great success there too. I now keep a spray bottle of it in the Tesla to use at charging stops.