Traps are about your best bet and even at that you can't get them all! Coyotes move into an area and then move out when pressure turns up or food isn't as easy to find.

Trappers have been put out of business by our wonderful state game laws so now landowners are gonna have to pick up the slack and extra cost of learning to and trapping predators themselves! This is not easy or cheap if you truely wish to be effective!

I personally don't use poisons but if I planned to I certainly wouldn't be posting about it on a public forum!