Here is the development history of particle barriers
a) Particle barriers were developed in 1956 by Dr. Walter Eberling at the University of California, Berkeley.
b) In the 1980’s, Dr. Tamashiro Minoru, of the University of Hawaii, developed methods to use particle barriers in construction.
c) In the decades since, the use of particle barriers in construction has spread around the Pacific Basin, particularly in Australia and Hawaii which are areas of extreme termite pressure.
d) Usage of particle barriers has not taken grip in the U.S. mainland. Without a mainland source, freight costs are prohibitive.
e) However, there is no shortage of particle barrier research at mainland universities (primarily UF, UGA, LSU, and Texas A&M).
And now TERM Barriers provide a mainland particle barrier source. Data Sheet