In fact, a study published in the the Journal of Agricultural and Food Chemistry reported that the compounds in cinnamon oil are more potent in killing mosquitoes than DEET. The researchers tested eleven compounds found in cinnamon leaf oil for their capacity to kill the larvae of Aedes aegypti, the mosquito that carries yellow fever. Further, the researchers went on to explain that the cinnamon oil prove similarly lethal against larvae of other types of mosquitoes, providing a safe, natural, pleasant-smelling alternative to other pesticides.
Different essential oils have been found to be effective against different insects. For instance, below are some that work against biting insects:
The basic recipe for insect repellents are 1 part essential oil to 15 parts carrier oil. Safe carrier oils and alcohols include:
Hope this helps you enjoy a bite and itch free summer!