We've recently had a room replastered and inevitably, plaster ended up on the windows and window frames. I've managed to remove the actual plaster but there is a lot of adhesive left on the windows which I can't get rid off.
I've tried using window cleaner and a cloth, but it just goes straight over the surface of the adhesive without removing any of it.
Has anyone got any ideas how I can remove it? I don't want to use anything sharp, in case it scratches the glass of the window, but it looks awful at the moment. The area covered by the adhesive must be about a foot square and it's right in the centre of the window.
Any advice gratefully received!