An agent delivery system for eradicating rodents in an underground system of tunnels has a first chamber containing a first agent for delivery, a second chamber containing a second agent for delivery, a powered airflow device fitted to both chambers, and a tubing element fitted to both chambers for directing the agents into the tunnel system. The composition includes a polymer, except a polymer based on a conjugated diene, at least one stabilizer and at least one additive in an amount form 0. These assets are then assembled into a template to form a video frame or \u201cscreen\u201d, which is subsequently output in a video transport stream or video display. The ferrite sintered body includes the Cu compound particles present at a grain boundary. Upon injection of air into the at least one cavity, a portion of the plastic material is forced to exit the chamber.