Hey everyone, I just recently came upon a 70-200 2.8 and a 17-55 2.8 . And as you all know these are pretty expensive lenses. So I went to clean the glass on my 17-55 today and I noticed that my microfiber cloth has some dirt on it that doesn't go away from shaking it. Should I wash it. And if so how should I wash it. Or should I just start using the disposable wipes? Let me know what you guys recommend. These lenses are in mint condition. And I want to keep them that way.