Coumatetralyl 0.0375%w/w Rice Wax Block Request for Quotation Require multiple feeding for a lethal dosage. First generation anticoagulant. Pets and wildlife are less at risk. Benefits: 1. Moisture resistant, making them ideal for damp or dry areas. 2. Contains bitterants to prevent inappropriate ingestion by pets or unintended animals. Direction for Use: Generally, in locations where rodents or evidence of rodents have been observed. Continue to check the bait station and replenish bait until no evidence or rodents is apparent.