I used to use a live trap but went to the a lethal tube trap. In a weekend I have caught 13 tree rats. Those bastards are makin a mess of my bird feeders and suet feeders, So, they are introduced to the tube trap. It is like a rat trap but arm is inside the tube along with the bait. Works well.
What are you using for bait in your tube trap? I have it mounted to a old 2x6 and I'm using peanut butter and nuts. i can't get them to go into that thing for love nor money no matter where I put it.
