Not to disagree with you, Chris, but some guys I know have poisoned coyotes successfully in the past. I forget the name of the poison they used. my issue with poison is not only the fact that un-targeted animals may ingest it, but is mainly, at what point does it stop? If a coyote ingests poison and dies, what of the buzzards that eat HIM? Where does it end?
I've heard of folks hanging large treble hooks about 3' off the ground, baited with meat, for the sole purpose of "catching" coyote/fox/etc. I personally find the idea distasteful.
Since the "attack" the other night, I'm getting ready to break out the FoxPro and try calling some in. We have a fair number of predators in our area.
Several years ago, I sat on my front steps one night and called the same gray fox in twice. I had my NiteLite cap on with red lens, which I'd sweep back and forth across the front yard while blowing a rabbit-in-distress call. My daughter was sitting beside me holding the spotlight to make sure of target before I shot. (We had about 4 cats at the time, and they and fox look similar at 100 yards in red light). After blowing a few minutes, a fox crossed the road and stood by my mailbox. I got the .22 mag ready, gave her the go-ahead, and the split second the light hit him, he was gone. I missed.... Went right back to blowing, and within 3 minutes, he was back. Same thing...light hit him...he whirled...I missed. I stepped in and grabbed a shotgun for the next time. He didn't come back...
I did shoot 6 or 7 grays from the front porch the first two years I had chickens.
EDIT: I remembered....it was TEMIK. Not sure how they applied it, but several guys were using it a few years ago. (Granted, I suppose there is nearly no way of knowing how successful it was...or was not.)