My kitchen windows are so old that I cannot open them.  Also it's impossible to get the storm windows out if you don't open the main window, which makes it impossible to clean. (okay, in Europe you have no idea what storm windows are, they are a second set of windows that you put on in the winter when you don't have double glazing, pretty useful when it's -20C).  I have never cleaned them since I moved in.

I am going to attempt opening them and cleaning them again this week.

I'll keep you posted.  I love my little cactuses on the window, and I do love old windows.

if living in a farmhouse, a hat and dirty clothes make you a farmer boy.   now if only we had a few animals.