If you do not plan on doing anything with them I would use the live trap for a while first. I would get some fish oil and put it around and in the trap to attrack them. Use a can of plain sardines or something simular, after spreading the oil around it set the sardines or what ever in the trap for them. Then check every day and see what happens. Also have a warden or someone release them as they can be very mean. Good Luck