Regular Wire Minnow traps with some bread inside will catch a bunch. I do better with them then a tin cat which works good. I learned this years ago when I threw one on the river bank and while searching for another and walking around thru the weeds had to in a short time. I always have a couple set in the barn to keep the rodents under control.
These are cheap and work as long as the ramps stay in place I put the ramps in line with the can and use larger wire and less PB, but you get the idea In woods I pile some limbs/brush around it too.