They will if you use a yellow plastic pan. Also if you have a box, drill a 2" hole in the back up high. Weasels will want to look in that and see that bait...oh cover it with wire so that they can't get in taht way. You could if you have one, take a #0 longspring and file the trigger for lighter pan tention. That could catch a weasel but you also got the problem of a coon or something sticking its hand in...WAM! That critter will be mad and run away with your trap and box. Drill a hole that box the size of the cable you use. Secure that cable and possibly you will get more than a weasel. Its recomened that you also you a #1 1/2 longspring with very light pan tention.
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