How To Clean Your Grill, No Matter What Kind You Have

By: Emilie Sennebogen & Ada Tseng  | 
bbq grill with burnt-on grime
The cleaning process for restoring your BBQ grill doesn't have to be miserable. Stefka Pavlova / Getty Images

Is barbecue season your favorite season? If you haven't fired up your grill lately, it probably needs a good cleaning.

Do you know how to clean a grill? Keeping your grill clean will make your grill last longer and heat up better. And a seriously dirty grill also can be a fire hazard, especially if it has a grease trap.

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But the main reason you want to properly clean your grill is your food will taste better. Yesterday's barbecue rib marinade won't taste good on today's lime-grilled chicken. The good news is it's simple to keep your grill clean if you just follow a few steps before — and after — you fire it up.

How To Clean a Gas Grill

Many backyard barbecuers prefer the ease of a natural gas or propane-powered grill. They light up with the flip of a switch and don't need the same level of cleaning as charcoal grills. But gas and propane grills still need to be cleaned, mainly to remove grease and smoke buildup.

Here's how to clean your gas grill.

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  1. Clean the grates. You want to clean them before and after you grill, every time. Heat up the grill to high for about 10 to 15 minutes. Then use a long-handled, wire brush to scrape off any stuck-on food.
  2. Oil the grates. After you've grilled and the grates are clean, use a rag to apply vegetable oil or shortening to the grill grates. The best time to oil is when it's warm — not so hot that you'll burn yourself but before it fully cools down.
  3. Clean the inside of the grill. Occasionally you want to clean the grill lid and heat deflectors over the burners. Just use mild dish soap to clean both. The burners are easy to remove; just let them dry before you reinstall them. Also, clean the grease pan and drip tray to prevent grease fires.
  4. Clean the burners from the gas supply line. Make sure the gas is off completely. Clean the burner tubes occasionally to remove any blockages to the gas ports. Use a wire brush (sans cleaning solution) and scrape side-to-side so you don't push debris into the ports.

How To Clean a Charcoal Grill

If you prefer a charcoal grill for the flavor it imparts to your food, it will require more cleaning than a grill with a gas or propane tank.

That's because ash from the coals ends up at the bottom of the grill after it's burned. If you don't clean that out regularly, it can build up and block vents that allow air to circulate. Without enough airflow, you can't control your grill's temperature; the fire can choke out entirely.

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But the extra cleaning time is worth the little effort to get that smoky flavor only charcoal can add. Here's what you need to do to keep your charcoal grill in top condition every time you cook.

  1. Clean the grates. You should do this before and after you grill. Open the vents and heat the grill to high for about 10 to 15 minutes so the grates get hot. Then use a stainless-steel grill brush to scrape off burnt-on food debris from the grates. Note: There have been some reports of wire brushes posing safety concerns. If you want to be extra careful, scrub with pumice or a ball of balled-up aluminum foil instead.
  2. Oil the grates. After you've grilled and the grates are cool enough, apply a liberal coat of vegetable oil or shortening to the clean grates with a rag. This will help prevent rust and food from sticking.
  3. Clear out ash catcher. Once the charcoal and ash are completely cooled, brush the ash out from the bottom of the grill pan and store it in an ash bucket for disposal later.
  4. Clean the grill bowl. Occasionally — or before you close up your grill for the season — wipe down the entire grill bowl and lid with a mild dish soap. This helps remove grease and smoke deposits that build up over time.

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How To Clean Cast Iron Grill Grates

Cast iron grill grates require more maintenance so that the cast iron doesn't rust.

  1. Clean the grates. While the grates are still warm, use a grill brush or a ball of aluminum foil to scrape off food and grease. If needed, wipe with a damp cloth or paper towel with a bit of oil to prevent sticking. Don't use harsh detergents that may strip the seasoning. Abrasive tools like steel wool may also damage the seasoning.
  2. Deep cleaning. For deep cleaning, use a stiff brush or grill scraper. If needed, make a paste with baking soda and water and scrub until you have a clean grill ... or try elbow grease. Rinse with hot water, but never soak. Dry immediately to prevent rust.
  3. Oil the grates. Re-season the cast iron grates by coating with oil and heating the grill for 15 to 20 minutes.
  4. Store the grates in dry place. If you live in a humid area, keep them inside when not in use. If rust appears, scrub with a wire brush, re-season with oil, and heat.

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4 More Tips for Cleaning a Grill

  1. The best time to clean your grill is right after cooking, while the grill is still hot. It's easier to loosen grease and burnt-on food from the hot grill grates, compared to after it's cooled down.
  2. Protect your grill from dust, rain and rust with a grill cover. It can also prevent moisture buildup in general.
  3. The bristles of grill brushes can come off and get stuck to the grates as you clean them, so it's always good to wipe down the grates with a thick rag after you've scraped them with a bristled brush.
  4. Replace your grill brush annually. If you don't have a grill brush, you can use a crumpled ball of aluminum foil to clean your grill grates instead.

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