Ethylene glycol, the primary ingredient in most antifreeze products, is highly toxic to animals, including rodents. Ingestion of even small amounts can lead to kidney failure and death. This toxicity makes it a potential, albeit dangerous, method of rodent control.
While the lethal nature of this substance might seem like an effective solution to rodent infestations, it carries significant risks. Non-target animals, including pets and wildlife, can be poisoned if they access antifreeze spills or contaminated bait. Furthermore, improper handling and disposal pose environmental hazards. Historically, its use for pest control has declined due to these risks and the development of safer, more effective rodenticides.