Q&A for How to Clean Windows With Vinegar

Maybe the strength of the washer just blasted the solution off without giving it a chance to get the grime off your windows. Next time, skip the power washer.

Yes, that seems unecessary, but it won't hurt anything.

It depends. You should not add vinegar to a window cleaner that contains ammonia because vinegar is an acid and ammonia is a base, so they would neutralize each other.

I have used Goo Gone to get sap off windows. Just use glass cleaner afterward because Goo Gone will leave behind some oily residue.

That would probably be most efficient, but you could also just pour some onto a rag or paper towels and wipe the windows with it.