cheers matey ill see if i can get it from bunnings or crtthis Alsystin SC from bayer will rid your outdoor plots of termites, i mix it at double recommended dose which is 2gr per 10 lires, just total drench the soil twice in 7 days, it interferes with the larvae forming, its originally meant for sciarid fly larvae in mushroom compost farms but works well on termites too, some hydro stores sell it as sciarid fly drench for fungus gnats, i buy it in bulk container from wholesaler for around $300
used this stuff for years, not often cos the termites dont come back to that area after treatment, noticed no toxicity to plants or humans
www.bayer.com.au/en/bayerrsquos-products/product-details.php?l1=Bayer+CropScience&aktion=details&id=127&l1=&l2=
listed below as 'sciarid kill'
http://www.nutriflo.com.au/Hydroponics-Shop/Pests & Diseases/Pesticides