The Environmental Protection Agency (EPA) issue registration numbers once they prove they have been tested for safety and efficacy. DEET products carry an EPA registration number. Oil of lemon eucalyptus also carries an EPA registration and is the only natural product recommended by the Massachusetts Department of Public Health (DHP).
- NewportRI.com Newport, RI DEET vs. natural mosquito repellent: What works? What’s safe? Aug 30, 2019