The key with the Permethrin is you need to spray it on your clothes then let dry. "should" last 4-6 washings. That's what they are advertising where I work.
If you are still looking, hang in there. You'll get more opinions than you really were looking for come August/September. I've watched lots of forums in the past. This is by far the best group of guys/gals I've been associated with.
