Wild Animals

Rodenticide Poisoning of Wildlife: Cascading Welfare Harms

Second-generation anticoagulant rodenticides used in pest control kill raptors, owls, foxes, and other predators that consume poisoned rodents, creating cascading welfare harms through food chains.

Key Facts

Rat poisons kill owls, red kites, foxes, and domestic pets that eat poisoned rodents
Second-generation anticoagulants cause death by internal bleeding over several days
Studies in California found SGARs in 80% of mountain lions tested
Snap traps and first-generation rodenticides offer alternatives with lower wildlife impact
EU has restricted SGAR use but implementation and enforcement remain inconsistent

Welfare Considerations

Wildlife poisoned by anticoagulant rodenticides experience prolonged internal bleeding causing weakness, disorientation, and slow death over days. This represents one of the most welfare-significant forms of incidental wildlife mortality from human activity. The indiscriminate nature of the poisoning means that non-target predators and scavengers suffer for a pest control problem that has better-targeted alternatives.

What You Can Do

Use snap traps, electronic traps, or first-generation rodenticides for pest control
Never use second-generation anticoagulant rodenticides in outdoor settings
Report suspected wildlife poisoning to local wildlife authorities
Advocate for stricter SGAR regulations in your country
Support research into alternatives to rodenticide-based pest control in agriculture