How to ward off snakes

When our dog, Cody, was still alive, Carolyn would walk him around our property, curiously wearing her snow boots, even with shorts in the summertime. When asked about the boots, she said it was to protect her from snakes. Apparently it worked too as she said recently that she's "never seen a snake out there." We all guess it's sorta like that old joke about the guy standing on the corner clapping. When asked why he was clapping, he told folks that it was to keep elephants away, and when they responded that there were no elephants around here, he responded, "See, it works!"