Definitely that time of year. I went out turkey season and got eaten alive by ticks for a few days. Went down and picked up some permethrin and soaked all my camo in it and hung it out to dry. Definitely had an odor for a while, but after a couple of days I couldn't smell it... not to say a deer couldn't. I did not get one single tick or chigger after that. Completely sold on the effectiveness. Not quite sure of harmful effects of it, but compared to some of the other things I do, probably quite minimal.