I haven't been yet but would really like to make it out there sometime. Friend of mine went and said the best place to catch them is anywhere that is wet! Said he wore them out on nightcrawlers under a cork.
Will ask if he is at work tomorrow... the warmer the better for them though I think since they are invasives from Africa and the Middle East. They die if temperatures dip below about 50 degrees. Can also use corn for bait now that I think about it