On Fri, 16 May 2003 18:44:35 GMT, "Stephen M. Henning" wrote:

animaux wrote:

Permethrin is a pyrethroid which is not natural. Pyrethrum is found in ONE
plant.

According to Oregon State University, my alma mater:

The term "pyrethrins" refers to the natural insecticides commercially
derived from chrysanthemum flowers; "pyrethroids" are the synthetic
chemicals, and "pyrethrum" is a general name covering both compounds.
Pyrethrins are natural insecticides extracted from several species of
chrysanthemums. The flowers of the plant are harvested shortly after
blooming and are either dried and powdered or the oils within the
flowers are extracted with solvents. Two pyrethrins are most prominent,
pyrethrin-I and pyrethrin-II. The pyrethrins have another four different
active ingredients, Cinerin I and II and Jasmolin I and II. It is a bit
presumptuous to assume that none of these chemicals or other pyrethrins
don't occur in other plants found in nature. Many plants have never
been examined and even more plants are discovered every year.

Ref: http://ace.ace.orst.edu/info/extoxnet/pips/pyrethri.htm

Oh, I was not talking about pyrethrins. I was talking about PeRmethrin. It has
nothing to do with pyrethrum or pyrethrins. Pyrethroids are not naturally
occuring.