We’ve witnessed the effects of what we believe was Pindone on hedgehogs (and Pukeko and Tui) in the large property business next to us — it was very distressing. This business now tells people not to take dogs into its estate — without stating why.
Here is a register by Carol Sawyer of vineyards in Central Otago who don’t use it or similar poisons. Needless to say, their product should get your custom.
An article on the Rangitikei Environmental Health Watch blog is here