slug and snail deterrent
Kathleen Sayce (Sat, 18 Sep 2010 11:04:27 PDT)

I use copper tape for pots, sometimes several layers. It does need to
be cleaned off periodically (vinegar or lemon works well, followed by
rinsing), as does copper foil. This seems to keep those pesky
herbivores off my tender lily seedlings, and others when fresh. Dust,
salts and oxidation can build up to the point that slugs can cross
the tape, so keep it clean.

Out in the garden, I use coffee grounds topped with sluggo, and other
slug baits of all kinds. They all loose potency with rain, so
constant vigilance is required.
Ducks also do a good job of eating slugs and snails, if you are into
backyard poultry and don't mind losing the occasional plant. I prefer
my ducks at a distance, or roasted.

Kathleen