Sure, it might keep those bugs at bay, but it’s a good idea to limit your exposure to this chemical that’s often used in insect repellents. You might need to experiment to figure out what works best, but consider using natural plant oils, like peppermint oil, geranium oil, rosemary oil and cedar oil. Before you slather your body with any essential oil, put a bit on your skin to test for an allergic reaction. Click to find a recipe for making your own DEET-free repellent.