"JimR" wrote in message
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"Chas Hurst" wrote in message
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"JimR" wrote in message
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Weed-b-gone contains 2-4-D, a known carcinogen, and MCPP, a suspected
carcinogen




There is no consensus that 2-4-D is a carcinogen.
Wikipedia's summary:

"the International Agency for Research on Cancer (IARC) has classified
2,4-D among the phenoxy acid herbicides MCPA and 2,4,5-T as a class 2B
carcinogen - possibly carcinogenic to humans. [6] A 1995 panel of 13
scientists reviewing studies on the carcinogenicity of 2,4-D had divided
opinions, but the predominant opinion was that it is possible that 2,4-D
causes cancer in humans.

A 1990 study of farmers in Nebraska, even when adjusting for exposure to
other chemicals, found that 2,4-D exposure substantially increased the
risk of Non-Hodgkin's lymphoma (NHL).[8] A 2000 study of 1517 former
employees of Dow Chemical Company who had been exposed to the chemical in
manufacturing or formulating 2,4-D found no significant increase in risk
of mortality due to NHL following 2,4-D exposure, but did find an increase
in risk of mortality due to amyotrophic lateral sclerosis."

Also: "The amine salt formulations can cause irreversible eye damage
(blindness); ester formulations are considered non-irritating to the eyes.
One study found that occupational exposure to 2,4-D caused male
reproductive problems, including dead and malformed sperm.[4]"

Another reliable source is the PAN pesticide directory, in which 2,4-D is
listed as one of their "Bad Actors" with "acute toxicity."

That's quite a string of negatives, especially when you consider there are
non-toxic alternatives available.

But it's no consensus. Carcinogenic and toxic are synonymous.