After grilling, let coal and ashes cool for several days in your barbeque or in a metal container. To speed up cooling, carefully put coals into a metal container full of water. Store the metal container away from combustible materials. Once completely cool, place the coals in a bag and then into your garbage.

Some charcoal is soaked in flammable fuels. If you have unused flammable charcoal you don’t want, first try to give it away to a friend or neighbor. If you can't find someone to use it up, take it to the Kitsap County Household Hazardous Waste Facility for free disposal.