Carefully shake each one out, (make sure theres no silverfish),put in a plastic tub with lid or plastic trash bag that can be tied closed, adds a bowl of baking soda, and a chunk of charcoal, the kid used in fish tank filters. Move around the order of the mag pile everyday and in about a week, they should be fresh.
"Treat the earth well, it was not given to you by your parents, it was loaned to you by your children"