PAFSS KitchenGuard utilizes a sophisticated wet chemical agent. This extinguishing medium is more than 99% biodegradable and is therefore not a hazardous waste. It can also be used as a cleaning agent, since it has excellent cleaning and fat-dissolving properties. This agent uses an extinguishing mechanism called saponification. Saponification helps to turn cooking fat into a soapy substance, smothering / cooling the fire and preventing re-ignition.