DEET is the most widely available and tested repellent. Products containing DEET are very safe when used according to the directions. Because DEET is so widely used, a great deal of testing has been done. To read more information about DEET safety see the National Pesticide Information Center [NPIC], EPA re-registration eligibility decision fact sheet (npic.orst.edu/factsheets/DEETgen.pdf).

https://campushealth.unc.edu/sites/campushealth.unc.edu/files/documents/InsectProtectionJuly%202016.pdf