Lots of talk about where your insect repellent is carried.  I came across one of these on a portage last year.
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I was just going to carry it out then I needed spray and my bottle was at the other end of the portage and I tried it.  It went into my shirt pocket and I used it for the rest of the summer. They have a clip like a pencil that keeps it from falling out of your pocket. I will buy another one for next year.