Here you can not buy them, (I do not know about Wisconsin ) but the only way we can get them is with our hands and maybe a few in a bait trap. Thanks for the pointers though they may come in handy if I figure out how to catch a mess of them. For now though what few I can catch I use for bait on bass and white perch. I am thinking trout may eat them also but have never tried them on them.

Thanks indianahunter, I may try this, this summer.