First thing you need is a room that has a 1 block wide exit and entrance, 3 square will work aswell just not as well.

Now at each entrance and exit to the room put Spring traps to bounce them back into the room.
Next Put ballistic cannons in the middle-ish of the room.
And to top it off put down some tar traps.

Now in the room where there are all the traps we put earlier all you have to do is spam Zeke's.
You can put other mobs in there if you want to.