ContraPest is the only EPA approved reproductive inhibitor for rats and a highly palatable contraceptive for pest control. Adding it to your Integrated Pest Management (IPM) program targets the source of an infestation for long-term success. The original Ultimate Bait System uses the PROTECTA EVO Express® platform to contain up to two (2) 13.5 fl. oz. liquid tanks for larger deployments. Order below or from the SenesTech website.