Systems and methods for using a scent elimination device to conceal contraband and then training service animals to determine if an ozone-based scent-removal technique has been used to remove scent from contraband are disclosed. The systems and methods comprise providing a plurality of packages. At least one of the plurality of packages containing a predetermined amount of a contraband substance. Further, the systems and methods comprise generating a gaseous stream of descenting material from a portable device. The gaseous stream of descenting material contains ozone. Further, the systems and methods comprise dispersing the gaseous stream of descenting material over the contraband in a concentration sufficient to eliminate the scent. The descented contraband may be placed in an enclosure for transport. Further, the systems and methods comprise introducing a service animal to the plurality of packages. Finally, the systems and methods comprise rewarding the service animal for the successful detection of the at least one of the plurality of packages containing the ozone-based scent remover.
