On 02/06/2018 09:01, Chris J Dixon wrote:
Derek wrote:

There is another web site that has been running an
experiment on various so called remedys, puts a slug in a ring of the
material and watch if it can cross, nothing stops them. (ash and bran
slows them down )

I remember watching a slug slither its way happily over the
copper tape I had put on a large plantpot. :-(

Some of the tape you can buy is plastic film covered copper. If the
copper stays a copper colour then it either is coated with a plastic
film or has been lacquered. Leave any uncoated copper outdoors and it
will discolour and start going green very quickly.

I suspect that slugs and not stopped by traveling over smooth plastic or
lacquer.




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