According to Anne LaBastille, in “The Black Fly” (Summer 1974), “At the present time, the best relief from blackflies may be accomplished by staying out of the Adirondacks during blackfly season.”
LaBastille also recommended locating campsites in airy, open, high areas, and dressing to minimize exposure—“avoid bikinis,” she wrote, “and fish-net T-shirts.”
George Washington Sears, aka “Nessmuk,” had his own 19th-century defense system, as he explained in Forest and Stream: “As for myself—even on Brown’s Inlet—they pass me by as if I were a hot griddle. On starting in I established a good, substantial glaze, which I am not fool enough to destroy by any weak leaning to soap and towels.” His recipe for insects: “three oz. pure tar, two oz. castor oil, one oz. oil pennyroyal. Simmer together thoroughly, apply…