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How to Clean Lava Rocks

Updated February 21, 2017

Lava rocks are often used for gas barbecue grills and can become quite dirty with food and grease droppings. You cannot use a wire brush or wash them in water as you might ceramic briquettes found in other gas grills. Instead, you must burn them clean. If however, the lava rocks are breaking apart, it's time to replace them rather than attempting to clean them.

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Turn the lava rocks carefully over so that the greasy side is facing down. Do this only when the grill is completely cool.

Lay some aluminium foil over the grill grate. This will help trap the heat in for a more efficient cleaning.

Turn the grill on high for up to thirty minutes. Your grill will start to smoke due to the burning grease. After it stops burning or the half hour is up, turn off your grill. Excessive heat for a long period of time can warp the grill.

Allow your grill to cool completely. Turn it back on high again to repeat the cleaning if necessary. Turn off after thirty minutes or when the smoke stops, which it should by that amount of time.

Allow the grill to cool and remove the foil. Your grill is all ready to use for cooking with clean lava rocks.

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Things You'll Need

  • Aluminium Foil

About the Author

Melissa Lewis is a former elementary classroom teacher and media specialist. She has also written for various online publications. Lewis holds a Bachelor of Arts in psychology from the University of Maryland Baltimore County.

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