Q: Do rat poisons like Warfarin affect animals higher up on the food chain?
A: Rodenticides in use today do have some negative impact on wildlife, said UW-Madison professor Stanley Temple.
Some animals can be poisoned by eating the poison bait themselves or eating a rodent that has been recently poisoned.
"Those types of exposure can pose occasionally serious threats to either animals attracted to poisoned bait or to predators and scavengers in areas where rodenticides are used
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