Clean the mirror - without chemicals
Mirror cleaning was for a long time a really annoying work for me. I think I've pretty much tried all the tips. Splashes from brushing, etc. could be removed very well with all the tips, but unfortunately I never got my mirror streak free.
At some point I came across the tip to clean mirrors only with water.
And this is how it is done:
1. Using a damp cloth (I take a microfiber glove from the discounter) to wipe the mirror.
2. Polish with a dry cloth (again, I prefer to use a microfibre cloth).
Have fun trying the tips!