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Slug barriers, including copper wires and mesh, aluminum flashing, and hydrophobic paints, were tested last year at the Waimanalo Research Station for their effectiveness against slugs. If you grow vegetables, their findings will help you minimize the risk of rat lungworm vectors in your garden or greenhouse.
https://gms.ctahr.hawaii.edu/gs/handler/getmedia.ashx?moid=65858&dt=3&g=12
"I'm at that stage in life where I stay out of discussions. Even if you say 1+1=5, you're right - have fun." - Keanu Reeves
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great article. i had just found a roll of copper tape at a yard sale and going to give it a try. thanks for posting.. also interesting that it did not work on horizontal surfaces.
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FWIW, everything you listed is a chemical!
Language matters.
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I bet a smaller slug can cross the gap between the electrically charged wires without touching both at the same time and can proceed without getting a shock.
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Ozone (esp if solar PV generated) irrigation of fields has been used as a very effective oxidizing molluscicide....
& Java junkies may wanna try caffeine...
We had used copper barriers, but found that after a time, the barriers are not as effective.. One problem with deterrents, they do nothing to reduce the mollusk population.... just keep them, somewhat, at bay...
We have switched over to propane flame weeding for our large scale weeding & have noticed a huge reduction in slugs/snails...& it has been drier in the last couple of ears... so there is that...
Caffiene as a deterrent:
https://digitalcommons.unl.edu/cgi/viewcontent.cgi?article=1465&context=icwdm_usdanwrc
Article on molluscicides:
https://www.chemservice.com/news/2015/03...luscicide/
& effectiveness of commercial baits:
https://pnwhandbooks.org/insect/ipm/slug
