Food and beverage containers and non-food contact packaging “peanuts” are made of foamed polystyrene (PS) containing 0.5% to 15% by weight of the photoaccelerant, such as for example benzophenone. This additive greatly accelerates the photodegradation of this novel packaging for a specialized use: the abatement of litter comprising single-serving containers and packaging “peanuts” disposed of on land and in water. Conditions controlling the distribution of the photoaccelerant in and the formation of the polystyrene foam are critical to the rate of the photodegradation of this packaging in the environment.