Mmm, I use the dryer sheets too. They work, people always comment how clean and fresh my speaker smell. ...I just tell them it's because they're from Canada.
But really, I did try it and thought how cool is this. In between dryer sheets however I use (not swifter) the Pledge "grab it", "dry cloth", the same thing I use on my TV screen. I can't stress enough to use ONLY THE DRY ONES. My friend bought the wrong one (with polish) and it's a good think I was able to warn him prior to using them (on his TV).