Having read reviews of several different live traps, had no idea which was best.  So, bought about 4 different ones.  THIS ONE WORKED.  Put them all out with peanut butter and had no sign of any activity except this one.  Didn't know how many mice we had, but caught three with this one and zero with the others and no escapes, it seems, from the others.  They were all put in the same general area.  This one worked, was easy to set, easy to bait and easy to release the mouse.