Linked from
The 10 pages that link to Rodenticide, each with the reason it gives.
PesticideBroader topic: Rodenticides target rats, mice, and other pest rodents.
RodentiaRelated: Chemical control of rodents raises risks to predators and other nontarget wildlife.
Brown ratRelated: Rodenticides are a common means of controlling brown rat infestations.
MuridaeRelated: Control measures targeting murids can also affect predators and other wildlife.