Don't just try the black earwig, try any other insect. The point is that the insect world is vast and nasty . The shb taste good to Labidura it must taste good to another insect in another part of the world. Yeah sure through my horticultural knowledge I had a starting point, as I've used integrated pest management in production horticulture before coming back to the family business (once a beekeeper always a bk). I found the Labidura (brown earwig), on a list of beneficial pest for wheat crops from a study by students at longernong agricultural college back in the 80s, so it went onto my list. We trialed about 30 different species. I would never want to send our insects overseas, I think man has made that mistake too many times.other insects could of also worked but we wanted something that would not become a pest itself, whether to bees, beekeepers, farmers, orchardists or the environment.
Labidura is not perfect, well that is any IPM (integrated pest management) needs balance don't send 2 earwig to eat 100 shb and their 10000 larvae overnight and then call me and say it didn't work. It is excellent in prevention and very good in control if that balance is kept either by you adding more or by their own breeding.
NB. Labidura truncata is one of the only non social insects to care and protect its young, well until they are big enough to run, then mum decides to eat the kids, as I started with the insect world is nasty.
Good luck over there try your agricultural college s or government departments for assistance. I've been going to publish a paper on this subject for a year or so, perhaps I will at the end of this season, that will give more details etc. I just wanted it to be tested in other environments first.