I'm all about innovation, but sometimes it's good to just stick to the classics. A good spray like this Cutter Skinsations insect repellent spray ($4, originally $5) will get the job done. It includes skin-soothers like Aloe and Vitamin E, so your skin will be soothed from possible past bites and protected from future ones, all while repelling a wide range of insects. However, it is important to note that it does include chemicals like DEET.