Over the years I have found the most effective method of four legged predator control to be by using a #160 Conibear trap in a pail set. Bait is placed behind the trap and when the critter enters it's soon a quick end.
I've found that square pails work best when slotted 6" as shown in the following picture.

With trap installed

Finally place the bait in back of pail; Lid isn't necessary but it does help keep pails rigidity.
Remember to secure trap to an anchor point.

I've found that square pails work best when slotted 6" as shown in the following picture.
With trap installed
Finally place the bait in back of pail; Lid isn't necessary but it does help keep pails rigidity.
Remember to secure trap to an anchor point.