Gas grills, like other grills and grill accessories, eventually need replacing after years of use and being exposed to the elements. When disposing of a broken gas grill, you don't want to toss the grill into an illegal waste dump or leave the grill in your backyard for weeds to grow around it. Gas grills contain metals that rust and can contaminate the environment over time. The grills also include a propane gas tank that needs to be disposed of properly as well.
Use a wrench to disconnect the propane gas tank from your broken gas grill. Wear work gloves to protect your hands.
Place the propane gas tank into a trash bag. Tie the top of the bag closed.
Take the propane gas tank to your area's hazardous waste facility or a propane supplier/hardware store that specializes in disposing of old propane gas tanks.
Place your broken gas grill on the curb next to your home's trash can(s) on the day of your scheduled trash pick-up.
Note, you may have to contact your area's trash collection service and schedule a "special pick-up request" for the broken grill you are throwing away. A fee may be charged for this service.