I'm almost embarassed to post this tip because its just SO obvious. One of my biggest annoyances is overspray when cleaning windows. I just hate when I get window product on the hood and roof. Duh ..... I know as simple as this is there must me at least 1 other person out there like me who never thought of just laying a terry on top of the hood and roof or trunk before spraying the windows with whatever product you use. As the light went off, I just shook my head in total disbelief that I hadn't thought of this before. Oh well, I guess its never too late. I hope this helps someone else out there.