My vote is for generating heat sufficient enough to kill the germplasm within the seeds.
Weed seed kept at a temp above 140°F for an extended period of time will lose germination viability.
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Mischka
One last word of farewell, Dear Master and Mistress.
Whenever you visit my grave,
say to yourselves with regret
but also with happiness in your hearts
at the remembrance of my long happy life with you:
"Here lies one who loved us and whom we loved."
No matter how deep my sleep I shall hear you,
and not all the power of death
can keep my spirit
from wagging a grateful tail.
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