Long-Term retardant is the ideal tool for slowing or stopping the spread of wildland fires. Phos-Chek Long-term retardants chemically alter wildland fuels to render them non flammable. The product can be applied by air via fixed or rotor wing aircraft, or on the ground using standard engines or one if ICL’s dedicated Ground Applied retarndat units. All Phos-Chek retardants are fully qualfied by the USDA Forest Service. They are the safest, most effective, and environmentally friendly products available. Long-term retardant is available in red iron oxide, fugitive (disappearing) color and uncolored. Medium and low viscosity; powder and liquid concentrates are available. To explore the Fire-Trol brand fire retardants please click here.