Dear Trudy,

Very carefully! (Sorry about that ;>)

Blow them off first. If that isn't enough, I use PEC-12 and PEC pads. Edwal film cleaner works well too, sometimes it will remove things PEC-12 won't so I keep a bottle around as well.. Sometimes. If the dirt is stubborn (be gentle), leaving the cleaner sit on the film for a few minutes helps.

Neal Wydra