One can soak/shake/wash it with IPA, Acetone or Alcoholic beverages. If desired, this can be evaporated on to some herbs for infusing them While using the active oil (which is usually copyright and maybe partly copyright N-oxide and that is safe and psychoactive), or otherwise just throw the solvent away. https://deanlbmvc.blogars.com/35377938/everything-about-copyright-vape-pen-usa