How to bring rid of the silverfish found surrounded by paperwork for files?

How to verbs Alcantara (microfaser or artificial suede)...
Answers:    Put the files in a cardboard box that can be closed. Put some mothballs into the box, depending on how frequent files there are (2 mothballs per folder), put the files into the box, and trademark the box. Leave it that way for a few hours or overnight.
How to bring back white-out past its sell-by...