The invention relates to a biodegradable, single stage pesticide delivery
system, to protect wooden structures by controlling insects such as
termites, and other wood destroying organisms, particularly the
subterranean species. The biodegradable pesticide delivery system is a
unique perforated and pressure treated sacrificial wood casing member with
an interior cavity prefilled with a pesticide. Foraging wood destroying
insects, such as subterranean termites, attack the non pressure treated
areas of the wooden casing member. The casing member is a round
cylindrical casing. It has also been found that casings in the shape of a
square offer different advantages in that longitudinal depressions can be
milled into their exterior surfaces which offer a much greater area of
forage for attacking insects, eliminating the need to selectively pressure
treat the casings. Also squared casings offer the opportunity to cluster
multiple casings into one grouped unit, wherein each casing can be charged
with a different pesticide. Squared surfaces also offer the opportunity to
provide longitudinal or horizontal grooves machined into each exterior
surface to simulate termite mud tubes. Also disclosed is the fact that
round as well as square casings can have brightly colored location markers
as closures, they can have a rubber or other flexible material closure
with a self sealing hole for a hypodermic needle to pass there through,
for injecting liquid pesticides into the casing. The casings either round
or square can have an acoustic monitoring system to detect the presence of
foraging insects, and the casings can have lateral holes bored into the
same at an angle of 45 degrees from the horizontal to prevent soil from
filtering into the casing. Also disclosed is the use of a corrugated paper
cavity matrix with graduated alignment of the corrugated openings, to
stimulate insect activity at the site, or alternatively, the corrugated
paper cavity matrix corrugations may be oriented laterally, or
longitudinally, and impregnated, or dusted with a pesticide and become an
active pesticide carrier.
