Hot Coals Are a Fire Hazard
Allow coals and ash to cool for 48 hours, or pour water onto them and stir carefully to speed up the process. Wait until they are no longer smoldering before attempting to dispose of them.
Dispose of Ash Carefully
Once ashes have fully cooled, wrap them in aluminum foil or place them in a small metal container, such as a coffee can, and dispose of them in an outdoor trash. Do not place them near anything that could catch fire.
Throw the Bag Away
Most charcoal bags are paper lined with plastic. Recycling facilities cannot separate the two materials, so bags must be disposed of in the garbage.
Ways to Reduce
Grill With Propane Instead
Propane grills are a more eco-friendly option than charcoal grills.
Ways to Reuse
Used Charcoal Is Fertilizer
If your used charcoal is additive-free, you can use it to fertilize plants. It is alkaline and contains the nutrient potash. Avoid using it with plants that require more acidity (e.g., hydrangeas and azaleas), as well as new seedlings.
Repurpose Unused Charcoal Around the House
If your unused charcoal is additive-free, use it to neutralize odors, prevent metal from rusting, or balance nutrients in potted plants, garden beds and compost piles. For more inspiration, check out these ideas from This Old House.