What effect do DEET-containing insect repellants have on FR clothing?
Since DEET-containing insect repellants contain flammable chemicals, applying them topically to FR garments may have a negative impact on a garments flammability. Testing has shown that applying insect repellant containing DEET to the garment itself increases the duration of the surface flame when exposed to a fire hazard. For this reason Workrite recommends applying insect repellant directly to the skin and not on the garment itself.