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The value of LD50 for a substance is the dose required to kill half the members of a tested population after a specified test duration
This is, effectively, how oral flee/tick medications work in animals. It basically turns the animal’s blood into a mild poison. The poison is mild enough that it doesn’t affect the animal but it’s enough to kill small insects like flees, ticks, or mosquitoes.
The internet is filled with Schrodinger’s Asshole. How is anyone supposed to know if you meant it sarcastically originally or are just claiming it was sarcastic now that it hasn’t landed?