Where Did Rat Poison Come From?
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Author: Steffen A.Hall Rats and certain other vermin are difficult to kill with
poisons because their feeding habits reflect their place as
scavengers. They will eat a small bit of something and wait,
and if they don't get sick, they continue. A good rat poison
must be tasteless and odorless in lethal concentrations, and
have a delayed effect.
There are several types of rodenticides available. The
traditional products are called anticoagulant rodenticides and
are discussed here. If one intends to use a rodenticide we
encourage you to choose this type over others as there is a
readily available antidote for the anti-coagulant rodenticides.
Other rodenticides are more toxic and no antidote is available.
In 1921, ranchers were dismayed at the sudden onset of lossage
in their herds due to a strange condition: the animals bled to
death. Small cuts failed to heal. The roughage cows eat will
scratch their digestive systems, but unlike the normal case
where such scratches are minor and readily heal, these
scratches failed to heal and the animals died from internal
hemorrhaging. What seemed odd was that the animals were being
fed hay from fields that appeared not dissimilar from that of
previous years. No sudden invasive plants of a poisonous nature
had been found.
A researcher by the name of Karl Paul Link, working under the
aegis of the Wisconsin Alumni Research Fund (WARF), did a
careful analysis of the ensilage from ranches that suffered
losses and those that did not. He discovered that a chemical,
dicoumorin, found in the ensilage of sweetclover hay from those
ranches suffering the losses, was a powerful anticoagulant.
Dicoumarin is the result of a substance called coumarin, which
is the chemical which gives new-mown hay its characteristic
smell, being subjected to the heat and mold in a silo, and
forming a double molecule. The year of the serious losses had
been an unusually warm one after the ensilage was created.
And it is with this checmical that the modern day Rat Poisons
are derieved from. They are lethal enough to kill off an entire
colony of rats!
Single feed baits are chemicals sufficiently dangerous that the
first dose is sufficient to kill.
About The Author: Mankind and Rats has been at odds for
thousands of years. Find out About Poison Rat at
http://PoisonRat.ewhy.info
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