All fire extinguishers are under pressure and should not be put in the regular trash. There are three varieties of fire extinguishers manufactured in the past decade: water filled, gas filled and chemical filled extinguishers. Water filled and gas (CO2) filled extinguishers are inert, and are not harmful. The dry chemical variety can cause irritation, so extra care should be taken with these units. Many of today’s units are rechargeable. For a small fee you can have your fire extinguisher emptied, checked and re-filled.
