A product package is provided for containing a product or object. The package contains a first agent that is energizably convertible by an energy source to a sanitizing agent including ozone in the package. The sanitizing agent including ozone in the package is transferred to the product or object while in the package. The first agent can include oxygen. The oxygen converts to ozone after being energized by ultraviolet radiation energy inside the package. The ultraviolet radiation energy can be radiated from outside the package, through the package, and into the package to energizably convert the oxygen to ozone in the package. The product or object in the package can be treated with the sanitizing agent including ozone in the package to provide a sanitizing, disinfecting, or sterilizing treatment, in the package.