A method, a sensor device (204), and a package storage system (200), are used to monitor the inside of a storage volume in a package container (202) containing at least one product and/or object (201). The sensor device is inside of the storage volume in the package container (202) and senses the presence of at least one of a sanitizing agent comprising ozone (316) and ultraviolet radiation energy inside of the storage volume. The sensor device (204) wirelessly transmits the sensed information from inside the at least one storage volume to a wireless receiver (222) outside of the storage volume to provide the sensed information to a processor (220) that monitors the presence of the at least one of the sanitizing agent comprising ozone (316) and ultraviolet radiation energy inside of the storage volume in the package container (202). The sensor device (204) can communicate using an RF ID device communication protocol.