Thank you for the question.
The registration of strychnine was cancelled in 1992 due to concerns about its high acute toxicity and the high potential for non-target poisoning.
I understand that farmers are interested in using it to control Richardson's ground squirrel, but a lot of other species were also exposed to strychnine, consumed it, and were killed unintentionally.
Obviously we have a responsibility--it is clear under our new act--to look at environmental impact and non-target species.