Choosing a Bug Repellent
Personal bug repellents are available in various forms and concentrations. Aerosol and pump-spray products are often intended for skin application as well as for treating clothing. Liquid, cream, lotion, spray and stick products are designed for direct application to the skin.
According to the U.S. Centers for Disease Control and Prevention (CDC), the three most-common active ingredients in repellents are DEET, picaridin and oil of lemon eucalyptus. The CDC considers DEET and picaridin to be the most effective. Between the two active ingredients, picaridin products are less problematic when used repeatedly over an extended period of time.
Source: University of Arizona