For the second year in a row, I made my own Permethrin spray and have not found the first tick embedded in my hide. If you want to do the same, I would suggest going to HuntingPA.com, in their turkey hunting forum, and reading a post they keep at the top titled, "The Magic Tick Potion." There is some excellant information contained in that thread, and you can save a ton of money by making your own clothes spray.