So you start by saying how cleaning your windows is not "rocket science", but then finish by saying you've spend a lot of time and money over years determining what works and what doesn't.Jeez people. You don’t need a chemical engineering degree to clean your windows. It’s not rocket science. Go to Walmart and grab a bottle of Invisible Glass and a few good quality microfiber cloths. The solution is safe on tinted glass and is 100% streak-free (paired with the proper cloths). Use separate cloths for the inside and outside of each window.
I used to detail cars and have tried every kind of car wash soap, clay bar, wax, sealant, polish, carpet shampoo, tire shine, glass cleaner, you name it... that’s on the market... no joke. PM me if you need some advice on the best products to buy. I do also have some experience within the professional grade realm of products as well (stuff that’s not available in your local Walmart or Autozone).
I spent a lot of money over the years trying every kind of different product and have learned exactly what works well and lasts versus what doesn’t.
Sounds like science to me.