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Rodenticide
Rodenticides, colloquially rat poison, are typically non-specific pest control chemicals made and sold for the purpose of killing rodents.
Some rodenticides are lethal after one exposure while others require more than one. Rodents are disinclined to gorge on an unknown food (perhaps reflecting an adaptation to their inability to vomit), preferring to sample, wait and observe whether it makes them or other rats sick.〔(【引用サイトリンク】url=http://www.smithsonianmag.com/smart-news/why-rodents-cant-throw-up-in-case-you-were-wondering-25707720/?no-ist )〕 This phenomenon of bait shyness or poison shyness is the rationale for poisons that kill only after multiple doses.
Besides being directly toxic to the mammals that ingest them, including dogs, cats and people, many rodenticides present a secondary poisoning risk to animals that hunt or scavenge the dead corpses of rats.
==Chemical preparations==
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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