Refillable Rat Killer Station, Includes: 1 Rat Station & 15-30 gm Blocks, Station Is Child & Dog Resistant, Use Inside Or Out, Can Be Used To Kill Mice Too, Clear Lid For Monitoring, Meets Highest EPA Risk Mitigation Standards, Tier 1, Bromethalin Can Kill Within 24-48 Hours, Active Ingredient: Bromethalin 0.01%.