Fire extinguishers are not accepted at our household hazardous waste events. Fire extinguishers should be refilled or repressurized when possible (unfortunately, many household fire extinguishers sold today are not refillable). In the event that you cannot refill your common "ABC" compressed air, dry powder extinguisher, it should be de-pressurized and dismantled before disposal. Release the product into a trash receptacle then remove the valve by unscrewing from the canister. The metal canister, once de-pressurized and empty, can be recycled as scrap metal. The powder and valve can go in the regular trash. Very old fire extinguishers (often brass or copper) can contain extremely hazardous substances. Please contact your local fire department for disposal options.