How to Clean a BBQ Grill: Grates, Burners, Cookbox and Exterior

A clean grill cooks better. Food sticks less, flare-ups shrink, heat is more even and parts last longer. You don’t need to deep-clean after every cookout; a quick routine plus a few deep cleans a year is enough for most backyard cooks.

The quick clean (every cook)

1. Preheat the grill on high for 10 to 15 minutes to burn off residue.
2. Scrape the grates with a grill scraper or a bristle-free brush.
3. Oil the grates with a folded paper towel dipped in high-smoke-point oil, held in tongs.

After cooking, a second quick scrape while the grates are still warm makes the next cook easier.

A note on wire brushes

Loose wire bristles can stick to grates and end up in food. Inspect your brush often and replace it when bristles look worn, or use a bristle-free scraper or coil-style cleaner.

The deep clean (two to four times a year)

Gas grills

1. Turn off the gas and disconnect the tank.
2. Remove the grates and flavorizer bars or heat tents.
3. Soak the grates in hot soapy water, then scrub. For heavy buildup, spray a grill degreaser, let it sit, then scrub and rinse.
4. Brush the burner tubes gently along their length, and clear clogged ports with a paper clip.
5. Scrape grease and carbon off the inside walls and lid into the grease tray.
6. Empty and wash the grease tray and drip pan.
7. Reassemble and run the grill on high for 15 minutes before cooking.

Charcoal grills

1. Empty all ash; it holds moisture and causes rust.
2. Scrub the cooking grate and charcoal grate.
3. Wipe the inside of the bowl and lid, and peel off flaky carbon from the lid (it looks like peeling paint, but it’s smoke residue).
4. Clean the vents so they open and close freely.

The exterior

• Stainless steel: wipe with the grain using stainless cleaner or mild soap.
• Painted or porcelain surfaces: warm soapy water and a soft cloth.
• Side shelves and handles: degrease and dry.

Accessories need cleaning too

Grill baskets, skewers and tools collect grease. Soak them with the grates. Stainless rolling grill baskets and steel skewers usually clean up in hot soapy water.

Protect the clean grill

Once it’s clean and dry, cover it. A cover keeps rain and pollen off and slows rust. Our guide to taking care of nonstick grill mats covers mat cleaning, and the grill buying handbook explains which grill materials are easiest to maintain.

Signs it is time for replacement parts

• Grates that are cracked, flaking or badly rusted through.
• Burners with holes or uneven flames.
• Heat tents that have rusted thin.

Cleaning schedule at a glance

• Every cook: preheat for 10 to 15 minutes, scrape the grates, empty the grease cup if it’s near full.
• Monthly (regular use): wipe the exterior, check burner flames, empty and wash the drip tray.
• Every few months: deep clean grates, flavorizer bars or heat plates, burners and cookbox.
• Start and end of season: full deep clean, check hoses and connections, inspect for rust.

How to clean grates by material

• Stainless steel: scrub with a grill brush or scraper while warm. For deep cleaning, soak in hot soapy water and scrub with a non-scratch pad.
• Cast iron: scrape while warm, then wipe with a light coat of oil to prevent rust. Avoid long soaks.
• Porcelain-coated: use a nylon or brass brush, never steel, to avoid chipping the coating.

Burner check for gas grills

A healthy flame is blue with yellow tips. Mostly yellow, uneven or lazy flames usually mean:

1. Clogged burner ports. Clear them gently with a thin wire or toothpick.
2. Spider webs or debris in the venturi tubes. Use a venturi brush.
3. A regulator issue. Turn off the gas, disconnect, wait a minute and reconnect.

After any work on the gas system, do a leak test with soapy water on the hose and connections. Bubbles mean a leak: turn the gas off and fix it before lighting.

Grease fire prevention

Most grill flare-ups and grease fires come from built-up fat. Prevent them by:

• Emptying the grease cup and tray regularly
• Scraping the cookbox floor during deep cleans
• Trimming excess fat from meats
• Keeping a lid nearby to cut off oxygen if a flare-up starts

Never use water on a grease fire. Turn off the burners, close the lid and keep a fire extinguisher rated for grease fires within reach.

Natural cleaning options

For lighter jobs, a paste of baking soda and water, or a spray of equal parts vinegar and water, cuts grease on exteriors and side shelves. For baked-on cookbox grime, a dedicated grill cleaner, such as a GrillMeister degreaser, saves time.

Cleaning a smoker

Smokers need slightly different care. Scrape the grates after each cook, empty the ash or pellet dust regularly, and scrape creosote buildup from the lid and chimney a few times a season. Leave a thin seasoned layer on the inside walls; it protects the metal.

Make cleaning part of the cook and it never becomes a big job.

Frequently asked questions

How often should I deep clean my grill?

Two to four times a year for most backyard cooks, plus quick cleaning after every cook.

Can I clean grates in the dishwasher?

Some stainless grates are dishwasher-safe, but check the manufacturer’s guidance. Cast iron should never go in a dishwasher.

What’s the safest grill brush?

A brush with tightly bonded bristles, replaced as soon as bristles loosen, or a bristle-free scraper or coil brush.

Should I oil the grates?

Yes, lightly, before cooking, especially cast iron. Use a folded paper towel held in tongs with a high-smoke-point oil.