We have it here too in Alaska but I talk to the Alaska State Troopers and Fish & Game here...
We have wolfs and coyotes both with it but they will die from it after a year ortwobut it spreads fast...!
The best thing you can do is shoot every 1you see with it or with out it...
If I shoot 1 with it thats where he/she stays if its a goodhideI keep it...
KILL THEM ALL, LET GOD SORT THEM OUT...! 