What's in them?
Charcoal briquettes, that is. I don't know what's in them but it's not an awful lot of charcoal. These things produce more ash than the original volume of the briquette and that ash makes excellent concrete if it gets wet. The heat output is not all that great either. So they are banned from our boat both for the heater and for the outdoor grill. Real hardwood charcoal, which looks like chnks of black wood, is readily available in twenty-pound bags at most anywhere that handles outdoor cooking stuff, at least it is here in the big city. We get it from a discount grocery called Western Beef for about $9 a bag. 100 pounds of pea size anthracite costs about $20, but is hard to find these days. I bet you can find nice mesquite and oak charcoal in your area. If you are used to briquettes for cooking and switch to the real stuff, you have to adjust your cooking. It will incinerate that 2" steak in three minutes at the old level.