DOD Insect Repellent System
For optimum protection, Soldiers should utilize the DOD INSECT REPELLENT SYSTEM. In addition to proper wear of the battle dress uniform (BDUs), which provides a physical barrier to insects, this system includes the concurrent use of both skin and clothing repellents:
Standard military skin repellent: 33% DEET, long-acting formulation, one application lasts up to 12 hours, NSN 6840-01-284-3982.
Standard military clothing repellents, either: aerosol spary, 0.5% permethrin, one application lasts through 5-6 washes NSN 6840-01-278-1336; or impregnation kit, 40% permethrin, one application lasts the life of the uniform, NSN 6840-01-345-0237.