Do you mean a liquid of a type of cloth? Personally, I wouldn't put any liquid on my old iBook other than a damp cloth, avoiding the areas around the apple on the back of the case (water can seep in and damage the backside of the LCD).
Whatever is safer, is it safe to clean the keyboard? I've had my ibook for about three years seems like I should clean it, it's also definitely "less white" than when i bought it.
Whatever is safer, is it safe to clean the keyboard? I've had my ibook for about three years seems like I should clean it, it's also definitely "less white" than when i bought it.