Natural alternatives to DEET-based insect repellents

When I was up in Alaska in the 1990s, my very survival depended on liberal applications of DEET-based insect repellent, as it was high-season for mosquitoes and they were BIG, plentiful, and constantly present! However, the stuff is quite gnarly to your body and tough on synthetic fibers, too! There are more natural-based alternatives available, per this article from Sierra Club. Check it out and perhaps you will experience effective results without the DEET nastiness and issues!