Searching for a company that does natural lawn care in my area. A company says they feed with products derived from "humic shale" which they describe as 75 million year-old decomposed matter drawn from the earth. Isn't this the definition of Fossil Fuel/petroleum?
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Southeast Michigan. I contacted the company with the shale and they said shale is shallower than petroleum and a different beast, can't be ignited is safe for humans, pets etc.
Those humic products, though widely marketed to people concerned about "organic" fertilization, have been pretty resoundlingly debunked from an effectiveness standpoint: