is a botanical insecticide produced primarily in the flowers
of Tanacetum cinerariaefolium, a species of the chrysanthemum
plant family. Pyrethrum is an ancient insecticide that has
been used effectively to control insects for decades and is
non-persistent, decomposing rapidly in the environment. This
rapid degradation of pyrethrum has resulted in little known
cases of insect resistance, making it an excellent choice
for the control of agricultural pests.
insecticidal properties of the flowers were documented in
the early 1800's but it is suspected that the flowers were
used to kill insects a considerable time earlier. The first
commercially available products were powders made from ground
flowers and later crude oil extractions became popular.
the refining of crude pyrethrum extract to remove the plant
material, waxes, etc. is a highly complex process resulting
in a very high grade product. In East Africa the mature phrethrum
flowers are picked by hand, sun dried to remove moisture and
sent to a processing plant for extraction of the active ingredient-pyrethrins,
a misture of six closely related esters. The flowers are sun
dried and processed to extract the insecticide grade pyrethrum.
is non-toxic to humans and other mammals and is considered
biodegradable as well as water soluble. It is sought for sensitive
applications like the post-harvest treatment of fruits and
vegetables. Pyrethrum is so safe that the U.S. Government
approves its use on such insect-prone foods as tomatoes, even
while they are on their way to the supermarket or processing
Pyrethrum affects and inhibits the nervous system of insects
by causing multiple action potential in the nerve cells by
delaying the closing of an ion channel. Nerve cell membranes
have a specific electrical charge. Altering the amount of
ions (charged atoms) passing through ion channels causes the
membranes to depolarize which, in turn, causes a neurotransmitter
to be released. Neurotransmitters help nerve cells communicate.
Electrical messages sent between
nerve cells allow them to generate a response, like a movement
in an animal or insect.
acts as a contact poison, affecting the insect's nervous system.
Pyrethrum, when combined with a synergist that works by restrictng
an enzyme insects use to detoxify it, then becomes one of
the fastest acting insecticides known. Even before it kills,
it knocks down and paralyzes insects almost immediately.
Jamming & Resistance
Apparently small amounts of pyrethrum can jam the "black
box" of the insect's food searching mechanism. The insects
forget to eat, as it were. After decades of use, no insect
population has ever developed significant pyrethrum resistance.
We use and recommend the product RIPTIDEtm
produced by the firm McLoughlin, Gormley, King
and containing pyrethrum in concentrate which is mixed in
solution with water to fill the 55 gallon reservoir of the
system, thereby providing a thorougly effective misting element
to completely rid your yard of the infesting insect element.
at $200.00 per refill if we come to your home and do it.
at $140.00 per refill on a Do-It-Yourself basis
shipped directly to you.
you are always assured of using only the most user-safe, finest
quality insect killing
substance in your system.
click here for the RIPTIDEtm
Material Safety Data Sheet.
data sheet is in PDF format. If you do not have Acrobat Reader,
get a free copy by clicking on the icon .