ColdFire is more than a fire extinguisher. It's the only environmentally-friendly fire suppressant, fire retardant and heat shield in the world. It has no expiration date. This canister is contains the "all season" formula where it an be used in extreme cold weather down to -20 degrees F before it freezes. It can be used on A,B,D,K fires and electrical as long as the electricity is turned off first. There is not a better extinguishant on grease fires. The only known extinguishant that can put out a magnesium fire. Held within this little can is the power to put out fires with astonishing speed. This is a must-have emergency item for every home, car, utility vehicle, garage, business, boat, rv, etc.