I get needing to dispatch rats, but secondary rodenticide is a major problem for other wildlife that can and will encounter the dying rats, often dying themselves after ingesting the poisoned rat. Eagles, hawks, falcons, and owls are especially susceptible.
https://www.raptorsarethesolution.org/free-outreach-materials/?fbclid=IwAR31-AzbdOg_oU__015_pVKti9cl4StCXiaPHYTkWrmrDy5G5OEhs9O bF6U