There seems to be more fly and spider poo on the glass this summer than ever before. Also, those yellow blobs which I presume are blobs of bee honey. Even a porcupine sleeve doesnt cut through all the dung. What do people do when they have cleaned a window but can still see a blob of fly poo smeared across the window: 1) Dab it with a wet finger and buff it with a fineweave micro or scrim, risking making a dusty mess on the glass. 2) Re wash and squeegee the glass. 3) ignore it and move onto the next window. I normally give it a wet finger dab and buff with a fineweave. I only have the one cloth I can do it with though.....its been washed so many times and can be relied upon to leave no dusty mark. All of my other fineweaves leave hints of dustiness.