Barry,
The qt I bought is 35% Permethrin,for livestock,hence the

dilution. I have 2 washings on my hiking clothes that kept me sane last week in the Pictured Rocks without DEET, my hiking partner with DEET (25% I think) was having fits with the black flies and skeeters.
We met a tarp camper in Grand Marais that just hung "juiced" bandanas he kept in a baggie under his tarp.
All I know is that it works for me.

I see your from IL. Do you ever make it to the U.P.?
Living under the bridge the Porkies (besides Isle Royle) is my fav,but,way to far for me for anything under a 10 weekend.
Have you ever been to the Apostles? Is it worth the time? or stay with the Trap hills,Porkies?
We plan on 2 weeks this Sept. in the U.P.

P.s. PIc can be had here in Mi. Meijer carries it.