I've read a gazillion ways to clean headliners, from products to procedures. From using carpet based cleaners w/ detergents in them, to McGuire's All Purpose Cleaner on a microfiber and so-on. Can anyone give me a straight answer? I don't need to remove any specific stains, I'd just like to "wipe" mine down and get it clean again. Seems like there are a million detailing tips out there on every inch of a vehicle but not much on headliner maintenance.