Cleaning your barbecue without making a wrong move

A practical guide to safely maintaining the cooking grate, firebox and grease tray, with the right habits depending on the fuel and material.

A poorly maintained barbecue doesn't always show it. The cooking grate looks fine, the meal was good, and then one evening a flare-up reveals that grease had been building up for six cooking sessions under the cooking grate, in a tray that had never really been emptied. This is the most common scenario I see: not a lack of cleaning, but poorly targeted cleaning. People scrub the cooking grate diligently while ignoring the parts that actually pose a safety risk.

The right approach comes down to one simple idea. A light clean after every cooking session, a more thorough degreasing when deposits build up, and a safety check before every use. These are three different things. Mixing them up means either wearing yourself out taking everything apart after a single sausage, or letting a flammable layer of grease build up.

What needs cleaning, and how often?

Not everything needs cleaning at the same pace. The cooking grate needs frequent attention. The grease tray is a safety component, not just a dirty part. The firebox and ashes follow their own logic.

After each cooking session, the goal is to keep residue from forming a crust:

• Let the cooking finish and make sure the fire is safe before handling anything.

• Remove any visible food residue.

• Brush or scrape the cooking grate depending on its material.

• Empty or wipe out the grease collection tray if it's accessible.

• Clean the cooking utensils.

• Take a look under the cooking grate and around the burners to check that no grease is building up.

There's no need to take the appliance apart after every meal. The cooking grate deserves regular cleaning, but the big job can wait.

Regularly, it's time for a deeper degreasing when the cooking grate becomes sticky or blackened, when the grease tray fills up, after several intensive cooking sessions, or before extended storage. For a heavily used barbecue, checking the grease tray after every cooking session is a good habit. A buildup of grease significantly increases the risk of a grease fire.

This isn't a theoretical concern. The National Fire Protection Association reminds us that grease deposits should be removed from the cooking grate and the trays underneath it. In its 2020-2024 statistics, about 20% of barbecue fires involved an appliance that hadn't been cleaned.

At the end of the season, a thorough cleaning covers the Grate, the firebox and its inner walls, the grease tray, the burners on a gas model, the outer surfaces, the accessories, and the ashes once they've fully cooled. Then dry everything before covering it. MY BARBECUE recommends protecting the appliance from the weather and storing it in a dry place, which is the right approach. A waterproof yet breathable cover is better than a tarp that traps moisture and promotes corrosion.

How do you clean the Grate step by step?

Prepare for the task

Before touching anything: turn off the gas or unplug the appliance, wait for the flames to die out completely, put on suitable gloves, and work in a ventilated space. Remove the Grate if it's removable. And above all, never apply degreaser to a hot surface.

The Grate should be neither scorching hot nor ice cold. MY BARBECUE recommends cleaning it while warm, which is true for loosening grease. One small nuance in practice: dry brushing can be done while it's still a bit warm, but as soon as you switch to water, vinegar, or a cleaning product, the surface must have cooled enough to avoid steam and splattering. Pouring cold water onto very hot metal causes thermal shock and burns. That's a move I always advise against.

Remove dry residue

A suitable spatula, a nylon brush, a non-abrasive sponge, or a scraper designed for the material. After brushing, check the Grate before putting food back on it.

A word about metal brushes. I no longer recommend them by default. The Consumer Product Safety Commission reported several recalls in 2026 related to metal bristles that break off, remain on the Grate, stick to food, and can be swallowed. Wire-free alternatives exist and get the job done: a heat-resistant nylon brush, a non-metallic pad, a dedicated scraper, or simply a cloth once the appliance has fully cooled. If you still want to use a metal brush supplied with an appliance, inspect it before every use and replace it at the first sign of wear. For most people, it's just as well to do without one.

Degrease

For ordinary dirt: hot water, mild dish soap, non-metallic sponge or brush, thorough rinsing, complete drying.

For baked-on residue, MY BARBECUE mentions a baking soda paste and soaking in vinegar water. These are good household options. One useful clarification: mixing vinegar and baking soda at the same time largely neutralizes both. The reaction foams nicely but cleans poorly. It's better to apply a baking soda paste alone for mechanical action, or soak in diluted vinegar, then scrub and rinse.

Barbecue-specific degreasers help with thick deposits. Follow the manual, check compatibility with stainless steel, cast iron, enamel or non-stick coating, never spray on a hot grate, rinse very thoroughly, and never mix two household products.

Dry

Drying is not optional, especially for cast iron. A damp grate stored in a cover rusts quickly. Wipe it immediately, then let it dry completely.

What care does the grate need depending on its material?

The material changes everything. This is the mistake I see most often after metal brushes: treating a cast iron grate like stainless steel, or attacking an enamel finish with an abrasive.

Material	Routine care	To avoid	Key point
Stainless steel	Hot water, mild detergent, stainless steel-compatible brush, rinsing and drying	Chlorinated products, harsh abrasives, tools that scratch	Scrub in the direction of the metal
Cast iron	Hand cleaning, immediate drying, thin layer of oil if the manual allows it	Prolonged soaking, dishwasher	Watch for rust
Enamel or finish	Soft sponge, gentle product, light touch	Harsh scrapers, metal brushes, thermal shocks	Check the manual before using any abrasive

Weber specifies that cast iron grates should be cleaned by hand, never in the dishwasher. Cast iron therefore requires more drying and protection than stainless steel. To limit carbonized deposits on stainless steel, Weber also recommends oiling the food rather than saturating the grate with oil. It's a small detail, but it reduces cleaning effort in the long run.

Regarding dishwashers in general: MY BARBECUE indicates that some grates can go in, which depends on the model and the material. The safe rule remains to check the manual beforehand. For cast iron, the answer is no in almost all cases.

Should you burn off residue by heating the grate?

A short preheat softens grease and makes scraping easier. But it doesn't replace cleaning the grease tray or the firebox. Deliberately turning the barbecue into a self-cleaning Oven without the manufacturer's approval is a bad idea.

Burning residue can cause flames, ignite grease buildup under the Grate, damage certain coatings, and generate irritating smoke. The reasonable compromise: preheat moderately if the instructions allow it, scrape, then clean removable parts separately.

Charcoal or wood-fired Barbecue grill: the firebox and the ashes

This is the core range of MY BARBECUE, whose masonry models in stone or brick often run on wood and charcoal, with stainless steel Grates and ash collectors.

After extinguishing: remove large pieces of charcoal or wood, empty the ashes, brush the walls, wipe with a slightly damp sponge, and let dry before reloading.

The golden rule: never empty ashes while an ember could still be smoldering. The NFPA recommends letting the coals cool completely before placing them in a metal container with a lid, away from any combustible material. Ashes stay hot much longer than you'd think. It's better to let them cool for a long time than to throw them directly into a trash can or bag.

On masonry barbecue grills, distinguish between the Grate and the firebox and the exterior mineral surfaces. A powerful degreaser can stain porous stone, a joint, or a brick. Test any product on a discreet area first.

Limiting smoke and flare-ups

Fat dripping into the flames causes flames and smoke, and promotes the formation of polycyclic aromatic hydrocarbons, undesirable compounds produced when food is directly exposed to flames. Anses recommends avoiding this phenomenon: remove excess fat, do not place food in the flames, cook using the heat of the embers, keep a sufficient distance, and move food if flare-ups occur.

As general health guidelines, Anses notes that flames can reach around 500°C, recommends cooking at a maximum of around 220°C, and advises placing a horizontal Grate at least 10 cm from the embers. These are guidelines, not universal advice valid for all foods.

Liquid, solid or gel fire starters must be fully burned out before placing food on the grill, and should never be used to revive a fire that's already lit. Never use gasoline or any flammable liquid not intended for barbecue use.

Gas barbecue grill: also clean anything that could leak

On a gas barbecue grill, cleaning involves parts that affect safety: grate, diffusers, grease tray, burners and their ports, hose, regulator, connections.

The NFPA recommends testing for leaks with a soapy solution on the hose, regulator and connections, with the bottle open. Bubbles indicate a leak: close the bottle immediately and repair or replace the part.

Keep in mind: open the lid before lighting, never unclog a burner with a tool that could damage it, check for insect nests or debris in the tubes, close the burners and the gas bottle after use, and never use the appliance if the hose is cracked or porous. Degreasing the tray is key to preventing grease fires. And water should never be used on a grease fire: it splashes burning grease around and makes things worse.

Electric barbecue grill

Unplug before any cleaning. Never immerse the cable, plug, thermostat or heating element. Only remove removable parts if the instructions allow it. Regularly clean the grate and grease tray. Wait until everything is completely dry before plugging it back in. Anses explicitly recommends this regular cleaning of grates and trays for electric appliances.

Tips to take with a grain of salt

Crumpled newspaper, as mentioned by MY BARBECUE, can help in a pinch on a grate where the grease has already softened. Treat it as a one-off fix, not a hygiene method. The paper tears and leaves fibers behind, so inspect and rinse before the next cooking session.

Cut onion, lemon and similar tricks lift a bit of residue or freshen up smells. They don't replace degreasing the tray, cleaning the firebox, or inspecting the burners. A cooking trick is not a disinfectant.

What I'd check first

If there's only one thing to remember before your next cookout, it's not how shiny the grate is. It's the grease tray. Empty it, check what's building up under the grate, and get into the habit of checking it every time you use a barbecue grill frequently.

Only after that, take care of the grate according to its material, and replace your metal brush with a bristle-free alternative. These two actions cover most of the real risk.

One last reminder that has nothing to do with cleanliness but matters more than anything else. A barbecue is meant to be used outdoors. The CDC reminds that a charcoal, gas, or other fuel-burning appliance should never be operated in an enclosed space or near a window or air intake, due to carbon monoxide. The NFPA recommends keeping children and pets about 90 cm (3 feet) away from the cooking area and placing the appliance well away from the house, railings, and branches. A spotless grate never makes up for a gas leak, a clogged burner, or a forgotten ember.

FAQ

How often should you clean your barbecue grate?

After each cooking session, a quick brushing is enough to stop residue from forming a crust. A more thorough degreasing is needed when the Grate becomes sticky, turns heavily black, or before long-term storage. There's no need to strip everything down after every meal, but don't let grease build up.

Can you clean a barbecue grate while it's still hot?

Dry brushing can be done while the Grate is still warm, which helps lift grease more easily. However, any cleaning with water or a product should wait until it has cooled down enough. Pouring cold water on hot metal causes thermal shock and splattering. And no product should be sprayed on a hot surface.

Is mixing vinegar and baking soda a good degreaser?

Not really, and it's a persistent myth. Mixed together at the same time, they largely neutralize each other. The foam looks impressive but doesn't clean well. Instead, use a baking soda paste on its own to scrub, or a diluted vinegar soak, then rinse.

How do you dispose of barbecue ashes safely?

Never as long as an ember can still be smoldering. Let them cool completely, over a long period, then place them in a metal container with a lid, away from any combustible material. Throwing them directly into a trash can or plastic bag is a classic cause of fires starting.

Should you avoid metal brushes for the barbecue?

For everyday home use, yes, favor the alternatives. The CPSC reported recalls in 2026 linked to metal bristles coming loose and being swallowed. A heat-resistant nylon brush, a non-metallic pad, or a dedicated scraper do the same job without that risk.