Re: USB bug zapper to kill fungus gnats
If they are fungus gnats and you are looking for 100% control, you can't go past a biological pesticide known as Bacillus thuringiensis israelensis, or BT (i) for short.
I have this same problem with my mushroom growing endeavours and kills every last one. There is a similar variety known as BT, but you have to get the BT (i), it's mostly sold as a mosquito control, but very effective on gnats.
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Currently growing:
M.velutina, M.ornata, M.zebrina, M.sikkimensis, M.basjoo,
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M. rajapuri, Blue Java, dwarf red dacca, Williams, Dwarf Chinese plantain (same as dwarf cav?), dwarf cav, super dwarf cav, Choui cau (Senorita), Goldfinger, Pisang ceylan, and Four Tongan varieties I'm working through,one is popoulu. Newly added: Gros michele, lakatan and saba.
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