2 sides from inside the house.
Judy....I use Windex and newspapers. No black on windows but on hands so suggest gloves.
The inside is not a problem if you use warm water and vinegar and the outside, try finding a small handled, about 15 inches or so, soft brush and use the same solution.
the company Hg is providing a very good spray for the window. look on their website (I forgot the name but it work very well)
Norwex Window Cloth - cleans with just water!! https://maurawhite.norwex.biz/en_US/customer/shop/product-detail/387729?categoryName=Top_10