Apparently Ive been wrong on the use of (diatomite) as a bedbug killer. Apparently its all a function of chem diffusion where minerals and fluids are sapped out of the bedbugs body. However the PA State U had done extensive research on orchard and farm pests and the stuff apparently didnt work for those bugs. Same thing with roaches.
We used to use the stuff for final polishing of quartz wedgies for polarizing scopes.(Back in my day we had to learn to make our own bent glass crap and quartz wedgies for labs.
I think dynamite was discovered when Nobel accidentally spilled some nitro into a diatomite packing box, and he didnt die. There are some deep deposits in Germany and Austria, in the US we have thick young deposits (the best) in Nevada and Florida. In Germany they call the stuff kieselgur