1 pl in a case,JT Eaton Bait Block,9lb. pail,1 oz. blocks,diphacinone active ingredient,wax blocks,controls Norway rats,roof rats & house mice,USDA approved,WARNING: This product can expose you to chemicals including Bisphenol A (BPA),which is known to the State of California to cause birth defects or other reproductive harm. For more information go to: www.P65Warnings.ca.gov.