My NH-born wife was hesitant to come because of SNAKES...we have been here on and off since 2000, and have seen precisely ONE snake, and that one was swimming in the river about twenty feet below a deck we were standing on. As for poison ivy, I’ve heard it’s around, but I rarely hear complaints, and have to see it. Allergies? That certainly is in issue if you come into contact with it.
A lot of people mistake Virginia Creeper for Poison Oak. Poison Ivy is unmistakable, it’s those tremendous, hairy looking vines winding up tree trunks.
As far as snakes, keep your property clear of undergrowth as well as hiding places. Don’t give cover for small vermin upon which they feed, mice primarily, and you’ll see very few with one exception: very heavy rain verging upon flooding. That brings them out in droves, they’re moving away from flood areas. Old timers seem to think they and turtles have a sense and will move before flooding, so watch out if you see them on the move, in the roadway en masse. Flood’s a-comin’.