How to Clean a BBQ Grill for Your Next Cook-Up

Nothing beats firing up the barbie for a weekend cook-up, especially when 69% of Australians own one at home. But leftover grease, burnt food, and dripping fat can quickly build up, causing flare-ups and potentially dangerous fires. To reduce the risks, it’s important to know how to clean a BBQ properly.

Ready to give your grill a good scrub? This guide walks you through how to clean a BBQ grill step by step, including removing baked-on grease, cleaning the burners and grease tray, and avoiding common mistakes. You’ll also learn how often to give it a deep clean so it’s ready for your next cook-up.

What you’ll need to clean a BBQ

Before getting started, check the material of your BBQ grates and the manufacturer’s cleaning recommendations. Cast iron, stainless steel, and porcelain-coated grates may require different cleaning methods to prevent rust, scratches, or damage to the protective coating.

• White vinegar and baking soda to help loosen stubborn grease and grime

• Large tub or heavy-duty bin liner for soaking suitable removable grates

• Hot water and dishwashing liquid to cut through grease and food residue

• Bristle-free grill scraper to remove burnt-on food safely

• Food-safe degreaser to break down stubborn grease

• Plastic scraper to remove grease and debris inside the firebox

• Soft brush to clean around the burner ports

• Rubber gloves and clean rags to protect your hands and wipe down surfaces

Avoid wire-bristle brushes, as loose bristles can end up in your food. Steel wool and harsh oven cleaners can also damage certain grate materials and protective coatings. If you have cast iron grates, you should also avoid prolonged soaking to prevent rust.

Step-by-step: How to clean a BBQ step-by-step

Before getting started, it’s worth laying down some old newspapers or a protective mat around your BBQ to catch drips and food debris. If you’re using a degreaser, work in a well-ventilated area and follow the product’s safety instructions.

Step 1: Burn off leftover food and grease

Heat the grill to loosen burnt-on food and grease

Start by opening the BBQ lid and removing any large food scraps or debris that could catch fire. Then turn the burners to high, close the lid, and let the grill heat for around 10–15 minutes, or as recommended by the manufacturer. The heat helps loosen baked-on grease and turns stuck-on food into brittle residue that’s easier to scrape away.

Once finished, turn off the burners and let the grill cool completely before handling the grates or other components. Avoid touching the cooking surfaces while they’re hot, even if the flames are off. 

Step 2: Turn off the gas and remove the BBQ parts

Turn off the gas before cleaning

Once the BBQ has cooled completely, turn off the gas supply at the bottle and make sure all burner knobs are in the off position. For a full strip-down, disconnect the gas bottle following the manufacturer’s instructions, taking care not to force or damage the fittings.

Next, carefully remove the cooking grates, flame tamers or heat beads, and grease tray, depending on your BBQ model. Place the removable parts on a clean, protected surface and arrange them in the order you took them out. 

Step 3: Soak and scrub the BBQ grates

Prepare a cleaning solution for soaking BBQ grates

Fill a large tub with hot water, then add one cup of white vinegar, half a cup of bicarb soda, and a squirt of dishwashing liquid. Submerge the grates and leave them to soak overnight to help loosen baked-on grease and food residue. If they’re too large for a tub, use a heavy-duty bin liner inside a suitable container to prevent leaks.

The next day, scrub away any remaining grime with a bristle-free grill scraper or non-abrasive sponge, paying extra attention to the gaps between the bars. Rinse thoroughly with clean water, then dry with a clean rag to prevent rust.

Step 4: Clean the firebox, burners, and grease tray

Scrape away built-up grease and debris

Use a soft nylon brush or old toothbrush to clean around the drain opening and strainer. Start by using a plastic scraper to remove built-up grease and food debris from the firebox, pushing it towards the grease chute and into the tray below. 

Next, apply a BBQ-safe degreaser suitable for the interior surface, such as Weber Q & Grate Cleaner, following the product’s instructions. Let it sit for at least 3 minutes before wiping away the grease with a damp rag.

Then, gently brush across the burner ports to clear any debris, taking care not to damage the small openings or ignition components. Empty the grease tray into the bin, wash it with hot water and dishwashing liquid, and rinse thoroughly. Finish by drying all cleaned surfaces and removable parts with a clean rag.

Step 5: Reassemble and burn off the BBQ

Put the clean, dry BBQ parts back in place

Once everything is clean and completely dry, put the grease tray, flame tamers, and cooking grates back in place. Refer to the photos you took earlier or your BBQ’s manual to make sure each part is fitted correctly.

Next, reconnect the gas bottle according to the manufacturer’s instructions and check the connections for leaks using an approved leak-detection solution. If everything is secure, turn on the burners and let the grill heat for around 10 to 15 minutes to burn off any remaining residue.

Once the BBQ has cooled, wipe down the lid and exterior surfaces with a clean, damp cloth to finish the job.

BBQ grill maintenance tips you should know

Clean your BBQ regularly to prevent grease buildup

As a general rule, scrape your BBQ grates after every cook while they’re still warm enough for residue to come off easily, using a suitable bristle-free scraper. Give your grill a full deep clean twice a year, ideally before the BBQ season starts and again at the end of summer. 

Firing up the barbie every week? Aim for a deep clean every three months. Don’t forget to check the grease tray every three to five cooks, or sooner if it fills up quickly.

A few simple habits can also help keep your BBQ in good nick:

• Avoid wire-bristle brushes: Loose metal bristles can stick to the grates and accidentally end up in your food.

• Check for grease buildup: Regularly inspect the firebox and grease channels to prevent blockages and sudden flare-ups.

• Cover your BBQ after use: Once it’s completely cool and dry, use a weather-resistant cover to protect it against rain, dust, and dirt.

• Don’t forget the exterior: Wipe down the lid, handles, and side shelves with a damp microfibre cloth to remove grease splatters, dust, and fingerprints.

Now that your BBQ is clean and ready for the next cook-up, why not give the rest of your home a little attention? Our guides on cleaning your kitchen sink and keeping wooden floors spotless have plenty of practical tips to help keep your home looking its best.

Need a hand getting your BBQ spotless?

Let’s face it, scrubbing months of baked-on grease isn’t exactly the fun part of owning a BBQ. If your grill needs more than a quick clean, why not leave it to a professional? Post a task on Airtasker for professional cleaning help, upload a few photos, and get offers from local cleaners who can help get your barbie ready for its next cook-up.

Got a few other home projects on your list? Whether you’re planning a kitchen upgrade or a new sink installation, Airtasker makes it easier to find the right help and get the job done.