I do not think we have pit vipers (never seen one) I have been told we have rattles, Black, corn and water. I am more freaked on the snake that our neighbor told us about that chases you. I think they called it a "black" something. They move real quick. Our neighbor said when she was a child, she was chased by one father was cutting grass with his tractor and caught up to it ran it over. Creeps me out thinking about it.