On 22 Dec 2018 16:27, Jeff Layman wrote:
On the way out:
https://www.gov.uk/government/news/restrictions-on-the-use-of-metaldehyde-to-protect-wildlife

It was ok against slugs, unless there was prolonged wet weather, but
useless against snails. Ferric phosphate is what's left, and appears to
be active against both.

In my experience the alternative does not work at all, maybe I was just
unlucky.

--
Regards
Bob Hobden