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Genesis 7:4 Seven days from now I will send rain on the earth for forty days and forty nights, and I will wipe from the face of the earth every living creature I have made.”
I have a Karcher but do not use it very often. My front windows are cleaned under the housing association contract and my back windows we do when they need it, likewise with the windows indoors.
Must be just me then. I have a window cleaner do my outside every two weeks and I clean my indoor ones on the same day he does.
I can't abide marks on my windows.