Originally Posted by PeterB666
Rocket blower first
Microfiber cloth or Kodak lens cleaning tissues next.
At a Leica seminar in Germany they gave all participants a big microfiber cloth and recommended using it without anything else (liquid, blowing). Also to keep it very clean, washing it often. They warned against using unknown microfiber cloths like the ones get from opticians as they may be impregnated with substances that can harm photographic lenses.