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Yes. The chief rat poison wafarin can cause lethel internal bleeding in humans.

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That is how it kills the rats. Warfarin stops the blood from clotting, and eventually the rats (or any other animal that eats it) die from heavy internal bleeding. It is used medicinally but obviously in very low concentrations under medical supervision.

There is a grim historical adjunct to this. The Nazis used a gas called Zylklon (sp?) in their extermination-camp gas-chambers. This was made originally as a rodenticide.

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9y ago

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