A clean grill cooks better, lasts longer and is safer. Grease buildup can cause flare-ups and fires, ash can trap moisture and promote rust and dirty grates make food stick. Regular cleaning does not have to be a big job if you keep up with it.
This guide covers general cleaning steps for common grills and smokers. Always follow your manufacturer’s instructions, especially for electronics, ceramic and finishes.
Safety First
- Let the grill cool before deep cleaning
- Turn off and disconnect gas
- Unplug pellet grills
- Wear gloves
- Dispose of ash in a metal container only when fully cold
Cleaning Grates
After Each Cook
Many cooks heat the grill briefly after cooking and brush grates while warm.
Brush Choices
Wire brushes are common, but loose bristles can stick to grates and end up in food. Inspect grates after brushing, replace worn brushes or use bristle-free alternatives such as coil brushes, scrapers or wooden scrapers.
Deep Cleaning
Soak removable grates in warm soapy water and scrub. Follow manufacturer guidance for cast iron and porcelain-coated grates; cast iron needs drying and oiling to prevent rust.
Gas Grills
- Remove grates and flavorizer bars
- Brush burners gently, clearing ports as the manual directs
- Scrape the firebox interior
- Empty and clean the grease tray and catch pan
- Check hoses for cracks and connections for leaks according to manufacturer instructions
- Reassemble
Charcoal Grills
- Empty cold ash regularly
- Brush grates
- Scrape the bowl interior if buildup forms
- Check vents for smooth movement
Pellet Grills
- Unplug the grill
- Vacuum ash from the fire pot and interior
- Clean the grease tray and drip bucket
- Replace foil liners if used
- Empty the hopper if storing long term
Kamado Grills
- Remove ash before each cook
- Burn off residue at higher temperatures within manufacturer limits
- Avoid soap on ceramic interiors unless the manufacturer allows it
- Inspect gaskets
See kamado grill basics.
Offset Smokers
- Remove ash from the firebox
- Scrape grease from the chamber
- Season and protect against rust
Exterior Cleaning
Use cleaners appropriate for the finish, such as stainless steel cleaners for stainless steel. Rinse and dry.
Cleaning Schedule
| Task | Frequency |
|---|---|
| Brush grates | After each cook |
| Empty grease tray | Regularly, before buildup |
| Remove ash | Before each cook or when cool |
| Deep clean | A few times per season |
| Inspect hoses and gaskets | Periodically |
Storage
- Cover the grill when cool
- Store in a dry, ventilated area
- Protect from rust
Questions to Ask
- What does my manual recommend?
- Are my grates cast iron, stainless or porcelain?
- When did I last empty the grease tray?
Common Mistakes
- Letting grease build up
- Leaving ash to absorb moisture
- Using worn wire brushes
- Using harsh cleaners on finishes
- Skipping leak checks
A Note on Grease Fires
Grease buildup is one of the most common causes of grill fires. If a grease fire starts, turn off the gas if safe to do so, close the lid to cut off oxygen and keep a safe distance. Never use water on a grease fire. Keep a fire extinguisher suitable for grease fires nearby, and call emergency services if a fire spreads.
A Note on Rust
Rust forms when moisture sits on bare metal. Dry grates after cleaning, oil cast iron, empty ash and use a breathable cover. Small rust spots on grates can often be scrubbed away and re-oiled. Heavy rust or holes in the firebox may mean it is time to replace parts.
Starting Small
You do not need a full afternoon to keep a grill clean. A few minutes after each cook for brushing and a monthly check of the grease tray prevent most problems. Save deep cleaning for the start and end of the season.
Final After-Cook Check
- Grates brushed
- Burners off and gas closed
- Grease tray checked
- Ash cooled and stored safely
- Cover on once cool
A Note on Cleaning Products
Mild dish soap, warm water and a non-scratch scrubber handle most grill cleaning. Degreasers made for grills can help with heavy buildup; follow label directions and rinse well. Avoid harsh cleaners on porcelain, painted or stainless finishes unless the manufacturer approves them. Never spray cleaners onto a hot grill.
Questions to Ask a Manufacturer
- How should I clean the burners?
- What cleaners are safe for the finish?
- How often should parts be replaced?
- Are replacement grates and burners available?
A Note on Seasonal Shutdown
At the end of the grilling season, deep clean the grill, empty the grease tray, remove ash, disconnect propane tanks and store tanks outdoors according to safety guidance. Cover the grill and check it before the next season.
A Note on Inspecting Parts
While cleaning, look for warning signs: burners with rusted-through holes, cracked hoses, warped heat shields, loose handles or worn gaskets. Replacing worn parts promptly keeps your grill safe and cooking evenly. Order parts made for your model, and follow the manufacturer’s instructions for installation.
A Note on Smokers and Drip Pans
Smokers collect grease and drippings in pans and buckets that can overflow during long cooks. Line drip pans with foil for easier cleanup, and check them before each cook.
Frequently Asked Questions
How often should I clean my grill?
Brush grates after each cook and deep clean periodically.
Are wire brushes safe?
Inspect for loose bristles or use alternatives.
Can I use oven cleaner?
Check your manual; some finishes can be damaged.
How do I clean cast iron grates?
Scrub, dry thoroughly and oil.
How do I prevent grease fires?
Empty grease trays and clean regularly.
The Bottom Line
Brush grates after each cook, remove ash and grease regularly, deep clean periodically, inspect parts and follow manufacturer guidance. See charcoal vs. gas grills.
Editorial note: Brisketry is independent and reader-supported. This guide is based on research into manufacturer documentation, published specifications and widely accepted best practices; we have not been paid to mention any product. If we add affiliate links in the future, they will be clearly disclosed per our Affiliate Disclosure.
Photo: Abstract Aluminum by Charlie Belvin Designs, CC0 1.0
