Will antifreeze kill rats and mice?

Yes, antifreeze can be lethal to rats and mice due to its active ingredient, ethylene glycol, which is highly toxic. When ingested, it affects the central nervous system and can cause severe organ damage or death. However, using antifreeze as a rodenticide is not recommended, as it poses significant risks to other animals, pets, and the environment. Additionally, there are more humane and effective methods for controlling rodent populations.