Tomcat with Bromethalin Bait Chunx are for agricultural use and professional applicators, and must be used within 100 ft. of man-made structures | Norway rats, roof rats and house mice cease feeding after consuming a toxic dose | Kills up to 12 mice per 1 oz. block | Kills up to 10 rats per 4 oz. of blocks | Bait stations are mandatory for outdoor, above ground use; bait blocks applied where children, pets and non-target animals may have access must be placed inside tamper-resistant bait stations, sold separately