Those Adamas picks are noisy.
Whatever that material is...another member said it's the same material as Ovation guitar backs...is very sensitive to a static charge.
The dryer sheet may work. I've never tried it.
What definately works is shielding your guitar. I do 2-3 coats of the paint on stuff & then cover it with the copper foil (w/conductive adhesive).
That cleans it up.
"Hi Ho...the Carrion Crow...FoldeRoldeRiddle"