In Southwestern Wisconsin we have two species of Rattle snakes (Timber, Eastern Massasauga) I have never seen a eastern massasauga before, but I have come a crossed a couple of large timber rattle snakes.
If you live by my book and just never handle any type of wild snake you will be fine. But you should still understand what these snakes look like and where they live.
Eastern Massasauga Rattlesnake: These snakes prefer lowland marshes and forest. This species worries me because they don't look like your typical rattlesnake and could be misidentified as the common Northern Watersnake.