Does anyone have experience with this product around chickens ? The claim is that a chicken would have to eat its own weight in this poison to kill it.
https://www.dineachook.com.au/blog/how-to-get-rid-of-rats-in-the-chicken-coop/
That blog says the poison they recommend is called difenacoum.
If I look at their items for sale, the text says it contains difenacoum, but the photos of the product show the label saying Brodifacoum.
Here's one example:
https://www.dineachook.com.au/io-ratshot-blocks-250g/
So I would be doubtful about which ingredient is actually in the product they are selling.
The claim is that a chicken would have to eat its own weight in this poison to kill it.
I only find that claim on the photos of the packages for sale (the packages that list brodifacoum as the active ingredient.)
I do not have any direct experience. But I found a wikipedia article on each chemical, with links to various sources of data, and neither one sounds very safe to me.
https://en.wikipedia.org/wiki/Brodifacoum
"Brodifacoum has an especially long half-life in the body, which ranges up to nine months, requiring prolonged treatment with antidotal vitamin K for both human and pet poisonings. It has one of the highest risks of secondary poisoning to both mammals and birds."
https://en.wikipedia.org/wiki/Difenacoum
This wikipedia article doesn't have a concise bit to quote, but does have a link to a report on difenacoum
http://sitem.herts.ac.uk/aeru/iupac/Reports/229.htm
"Difenacoum...is highly toxic to mammals ... is known to be highly toxic to birds and fish and moderately toxic to aquatic invertebrates."
If you use it, no matter which ingredient is present, I would definitely make sure the chickens have no access, and that no other creature (except the ones you want to kill) has access either.