An interesting read:-
http://www.asa.org.uk/asa/adjudicati...ication+Detail
s.htm?Adjudication_id=40295

Thanks. Long article but the essence being that slug pellets scattered
thinly are not dangerous to wildlife and poisoned slugs and snails also pose
no threat to hedgehogs. The only danger it outlined were piles of pellets
being eaten by pets. We have a black lab that eats anything, but since our
veg plot is fenced off from the dogs it seems a legitimate way of killing
off slugs and snails if they become a serious problem.

So, bottom line being, scatter them thinly, keep pets out, no harm done.

David.