Okay i only skimmed the thread but has the use of lasers been talked about? I have a 445nm 5mw cheap ebay laser i have successfully used to kill many many vermetid's.
It obviously does not wipe out the entire population but keeps in check and also keeps them from spreading when you cook them with the laser.
For a while i had several dozen and after using the laser have not seen any in months but i do expect to need to zap more in the future.
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