After completing a comprehensive re-assessment of DEET, EPA concluded
that, as long as consumers follow label directions and take proper precautions,
insect repellents containing DEET do not present a health concern. Human
exposure is expected to be brief, and long-term exposure is not expected.
Based on extensive toxicity testing, the Agency believes that the normal
use of DEET does not present a health concern to the general population.
EPA completed this review and issued its reregistration decision (called
a RED) in 1998. (More
about REDs)