the trick works for any small hard to reach places, but the air vents i thought stood out the most. Also i sprayed the door trim panels with some interior cleaner spray, gave it a good rub and now the leather bits are shiny 
works on any surface too, and that smooth sweeping shape of the top of the dashboard on Cavaliers looks wonderful when its gleaming 
Also another thing i found, even though its not interior but,
the door mirrors, if u look closely at the bottom corner, where the mirror meets the door, there's quite a bit of green mould there on the rubber seal from years of being wet and dry and not cleaned. It does look quite naff, so all i did is took the mirrors off, cleaned them, then cleaned the mounting points, and the corner of the rubber seal, to get all the mould off, and now it looks great Its just the little bits everywhere, that make the whole car look great if attended to. I always do a good job of keeping my Cavalier clean whenever i can, as its my pride and joy, so i feel as if i have to share a few tips with everyone Happy cleaning, everyone 
