Daniel Hanna wrote:

Don't any American remedies use rotenone as the active ingredient?
Snails aren't really a problem here in Australia - they don't eat roses
anyway - but if you must kill them then any Rotenone bait causes them to
mass suicide.

Rotenone is sold as an insecticide here, and metaldehyde was the product
used for mass suicide of snails and slugs until Iron Phosphate slug
baits came on. I have never heard of rotenone being used to poison
slugs, but since it is toxic to fish, may be it is toxic to molluscs as
well.

However, at the start of this thread, Sameer said something to the
effect of wanting an effective organic snail and slug control or
atleast a solution that relies on less pesticide. It also appeared that
he knew of slug baits that cause results that remind him of the French
Maginot Line, so, everyone seems to be focussed on recommending Iron
Phosphate slug baits to him.

--
Radika
California
USDA 9 / Sunset 15