Which statement correctly defines a stomach poison?

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Multiple Choice

Which statement correctly defines a stomach poison?

Stomach poisons require the pest to swallow the toxin, and once ingested, it acts in the gut to interfere with digestion or metabolism, eventually causing death. This mechanism is what makes them effective through bait or treated foods—the pest has to eat the poison for it to work. This is different from a contact poison, which must touch the pest to be lethal, and from a poison that kills by blocking respiration (which targets breathing rather than the digestive system). The idea that a chemical remains active in the environment describes persistence, not how it kills. So the correct statement captures the essential idea: the toxin acts after ingestion into the gut of a pest.

Stomach poisons require the pest to swallow the toxin, and once ingested, it acts in the gut to interfere with digestion or metabolism, eventually causing death. This mechanism is what makes them effective through bait or treated foods—the pest has to eat the poison for it to work.

This is different from a contact poison, which must touch the pest to be lethal, and from a poison that kills by blocking respiration (which targets breathing rather than the digestive system). The idea that a chemical remains active in the environment describes persistence, not how it kills.

So the correct statement captures the essential idea: the toxin acts after ingestion into the gut of a pest.

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