There are provided methods for sterilizing and/or disinfecting an object. The methods can comprise exposing the object disposed in a packaging material having at least one open end to an afterglow plasma, wherein the packaging material is non-porous and is transparent to UV radiation. There are also provided methods for using a packaging material. The methods can comprise disposing an object to be sterilized into the packaging material, the packaging material being non-porous, transparent to UV radiation, and having at least one open end and exposing the object and the packaging material having at least one open end, to an afterglow of a plasma, thereby at least substantially protecting the object to be sterilized.