There is lots of advice out there from pots filled with beer to scattering Comfrey leaves around as a sacrificial fodder, however, we were looking for a more elegant solution and it appears that it is Copper. Slugs do not like crossing copper as apparently they get a minor electric shock that deters them. There are many products on the market including rings for individual plants, however, we needed an industrial scale solution: copper tape.
The proof of the pudding is in the eating (not an analogy to take to far with slugs) and so we waited for the slugs to come out of hiding and head for the restaurant thoughtfully created for them. The sequence of photos below speak for themselves....
However, life is never quite that simple. The larger slugs did not seem deterred by the copper tape and waltzed happily over it (to die eating slug pellets...) and I did catch the tape with my brush cutter which came off second best by quite a long way. You also have to keep the tape quite shiny with a pan scourer otherwise the oxidised surface is less effective. In other places it simply fell off where the tape did not stick too well to the timber sleepers. I think there was also a resident population of slugs in the beds that saw no reason to go and hide in the surrounding grass each night.
Next year (this year now!) I will try and paint a strip of varnish around the sleepers first to aid adhesion. I did think about 2 parallel strips a few millimetres and a battery; that really would give them a shock. Perhaps a modification for 2012. One very effective method of control is the Chickens; they simply love slugs, however, they would probably eat everything else a well! I am sure the saga will continue.
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