MossRoad, Ah yes, just hearing the names of them brought back memories. My mom is a rabid anti-snake person. She leans toward the, "better safe than sorry" persuasion, doesn't know which are poisonous but knows which are "good" cause a good snake is a dead snake. I've seen her take out snakes with a shovel, hoe, and lawn mower. I am more in line with your parents, not on an extinction campaign for all snakes, just don't want the risk factor of too many poisonous ones near where our activities take place.
For anyone who would prefer to take passive rather than active defensive measures, there is currently a good set of tall snake proof boots on special at
http://sportsmansguide.com/
I recall my dad telling me that a college student working summers with him used to have to walk through a really snake infested area of tall weeds on a dailiy basis on the job. He got a couple lengths of galvanized stove pipe and suspended them from his belt likek chaps. Didn't see it myself but was told that the student found it real spooky when one would strike the pipe. My dad was known to spin a yarn or two on the spur of the moment but this was a "for real" recounting.
Off topic recollection: We were driving through the country side with a city dwelling aunt in the car when she asks my dad what those big tall cylinders were (silos) and without any pause he says, "those are the big antiaircraft guns to shoot at attacking airplanes in case of Russian attack. She buys it totally. A few minutes later she asks what are those short little round pointed things (galvanized metal corn cribs) and he says, "oh, those are the ammunition for those big anti-aircraft guns."
Another time we are pulling a utility trailier with a propane tank in it and some looky lou pulls along side (pre A/C when you drove with the windows down in summer) andwith eyes wide asks my dad what was that thing and without a moments hesitation he tells the guy it is one of those flying saucer things you been hearing about, were taking this thing to an army base.
That said, I still think he was reporting fact regarding the "snake armor."
Patrick