Doesn't work in the South east in my trials with it. I exclusively use clothing i pretreated with the sawyer permethrin soak. Now i can watch baby ticks (about the size of the dot a pen makes when you hold it above a piece of paper and drop it-so so so tiny) die in a few seconds. I recently looked down at my convertible pants, and saw about 50 of them crawling up, then i watched them fall off dead…i cannot describe the feeling of joy i had. I will put insects back outside if i find them in my home, im no sadistic bug killer, but man i don't mind watching these truly disgusting disease carrying ticks fall off my pants dead. Before i used it, i tried deet and picardin for years, still found ticks on me all the time, it even ruined a few of my hikes as i had so many tiny ones at certain points i had to quit because they were everywhere and it was hell. I also treat my hammock tree straps, shirts, backpack, and shoes.