Miss Perspicacia Tick wrote:
[...]
deadly poisonous (though, unfortunately, not to slugs).

Actually, I'm rather glad it doesn't kill them - I wouldn't like
the
thought of a lot of dead thrushes, blackbirds, hedgehogs, etc...

This raises a question I ponder every now and then. I know toxicity
is often in practice simply a matter of physical things like the
length of an animal's gut and speed or manner of digestion; but I'd
assume that, these things being equal, what will kill one
warm-blooded vertebrate will kill another. Meanwhile, do birds and
hedgehogs actually eat dead slugs and snails? If not, is a living
slug carrying a load of poison more of a danger to birds and
hedgehogs than a dead one?

--
Mike.