How To Clean Grill Grates With Vinegar. Add this mixture to the bag and seal the bag tightly. Add two cups of water on top of it.
All you need is a spray bottle, lukewarm water, white table vinegar and a sheet of aluminum foil. Allow the bag to sit overnight to allow time for the residues to loosen from the grates.
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Allow to soak for at least 1 hour then rinse and pat. Another cleaning solution you can use is to mix four cups of water to one cup of apple cider vinegar.