As promised in an earlier thread the advice I received was that the only effective treatment of Borers is by use of fumigation by for example MethylBromide ( dont know if I got spelling right !)
Freezer treatment & putting them in plastic bags and use of standard household sprays are not effective.
The wood dust is called Frass ( not sure of spelling too as I got this info by phone and hard to hear)
Quarantine officers inspect articles and place them into fumigation chambers.
I guess it would be sad to lose some bowls etc but rather this than have my house eaten up etc from these creatures.
So I go with protecting AUS and the great job the Q Officers do.
Hope this is of help.