trichome said:

roughbarked said:

trichome said:

kerosene might be too unstable for the environment, it might sit on the water table, kill stuff

Yes but since it was first discovered it had been the mainstay of carrot production from the 1940’s to the 1970’s when cheaper, more convenient herbicides such as linuron replaced kerosene.

I’m reasonably sure that virtually all of our efforts to bend nature to our will are wreaking havoc with all aspects of the ecosystem.

Wreaking havoc, And apparently so to with Neem, some say that is not good for the environment too. not enough information.
http://www.pesticideinfo.org/Detail_Chemical.jsp?Rec_Id=PC35751

Simply being oily is always a problem with concentration.