Photo by Reza Tavakoli from Pexels
Short answer: cleaning a flat top grill properly means two different routines, not one. A quick scrape-and-wipe after every single cook keeps the surface usable day to day, and a separate, less frequent deep clean handles the grease buildup and stuck-on residue the quick version can’t reach. Mixing the two up — either skipping the quick clean or never doing the deep one — is what actually causes the sticking, staining, and rust problems people blame on the griddle itself.
The Tools That Actually Matter
A metal griddle scraper does most of the real work — it’s the single tool that handles both the quick clean and the first pass of a deep clean. A nonabrasive scouring pad or pumice/grill stone is the second essential, for the residue a scraper alone won’t lift. A squeeze bottle for water gives you control over how much you’re adding, which matters more than it sounds: too much water at once just spreads grease around instead of pulling it toward the trough.
Paper towels beat cloth rags for the actual wiping step, since a rag holds onto grease and grime between uses unless you’re washing it every time. Baking soda covers the deep-clean paste job without buying a dedicated product, though the branded griddle cleaners work on the same principle if you’d rather not mix your own.
The Quick Clean: After Every Single Cook
While the griddle is still warm (not screaming hot, but warm enough that grease is still liquid), scrape everything toward the grease trough with a metal griddle scraper. Add a small amount of water in one section at a time — a few tablespoons, not a full cup — and scrape that section again; the water lifts residue that the dry scrape alone leaves behind. Wipe the section dry with a paper towel before moving to the next.
Once the whole surface is scraped and dry, wipe on a thin layer of high-smoke-point oil before you put the cover on. This step is not optional — it’s the same seasoning-maintenance step covered in my guide to seasoning a Blackstone griddle, and skipping it after cleaning is the single most common way a properly seasoned griddle starts rusting within a week.
The Deep Clean: Every 10-15 Cooks, or When Something’s Off
A deep clean is a different job: removing built-up grease under the surface seasoning, stuck-on carbonized food, or a general dullness that a quick scrape isn’t fixing. Heat the griddle to medium, then work a paste of baking soda and water (or a dedicated griddle cleaner) into the problem areas with a nonabrasive scouring pad, using real pressure. Scrape, rinse with more water than usual, and dry completely — residual moisture after a deep clean is worse than after a normal cook, because you’ve just stripped some seasoning along with the grime.
Re-season immediately after any deep clean: several thin coats of oil, each heated until it stops smoking and darkens, repeated 2-3 times. A deep clean without a proper re-season afterward leaves bare steel exposed, which is exactly the setup my guide to griddle rust covers as the most common way rust actually starts.
What Not to Use
Skip dish soap for routine cleaning — it’s not dangerous in small amounts, but repeated use strips the seasoning you’re trying to maintain, and a heavily soaped surface needs a full re-season to recover. Wire grill brushes are the bigger risk: bristles can snap off and end up in food, which is why most manufacturers and cooking sites now recommend a scraper or nonabrasive pad instead. Pressure washers are also a bad idea on a seasoned surface — the water pressure strips seasoning unevenly and can force water into the base and control housing.
Doing This in the Right Order Actually Matters
University of Minnesota Extension’s guidance on sanitizing food-contact equipment lays out a formal five-step routine — dry cleaning, wet cleaning, rinsing, sanitizing, then drying — and the reasoning behind the order applies directly here: removing loose debris first (dry scraping) makes the wet-cleaning step meaningfully more effective, because you’re not pushing solid particles around in the water instead of actually lifting residue. Skipping straight to a wet scrub without scraping first is a common reason a “cleaned” griddle still looks streaky.
Stains and Stuck-On Food
Dark, shiny discoloration that doesn’t scrape off is usually just deep seasoning, not dirt — leave it alone. A dull gray or brownish film that comes off with the baking-soda paste is carbonized grease, which is what a deep clean targets.
Melted cheese and sugary sauces are the two worst offenders for actually sticking rather than just staining, and both respond best to scraping while the griddle is still warm rather than after it’s cooled — cooled sugar and cheese harden into something closer to glue, and that’s the single biggest reason people reach for harsher tools than they actually need. Egg residue behaves differently: it lifts almost entirely with the water-and-scrape step alone and rarely needs the baking-soda paste at all.
The grease trough and catch cup get overlooked in almost every cleaning routine I’ve seen written up, competitors included, but they need their own attention — empty and rinse the cup separately from the main surface, since a full or crusted-over trap stops draining properly and grease backs up onto the cooking surface during the next cook.
Before Long-Term Storage
Cleaning before storing for a season is its own case, not just a bigger version of a deep clean. Do the full deep clean and re-season as usual, then apply one extra, slightly heavier oil coat specifically as a moisture barrier — a griddle that’s about to sit unused for weeks or months has no cooking cycles coming up to naturally refresh a thin coat if it starts breaking down. Check the cover fits properly and store somewhere genuinely dry if that’s an option, not just covered outdoors.
My Actual Routine
I do the quick clean every time, no exceptions, because skipping it even once is when I’ve had sticking show up the next cook. The deep clean happens roughly monthly with regular use, or immediately if I’ve cooked something heavy and greasy like a big batch of bacon. I’ve found the baking-soda paste handles genuinely everything I’ve thrown at mine — I haven’t needed a dedicated griddle cleaner product, though they work the same way. My Blackstone 36″ review covers how this same routine holds up on that specific model over time, including the grease-drain design owners consistently mention.
If grease management and cleanup ease are actually deciding which griddle you buy, my flat top grill buying guide covers which current models handle that better than others.
Frequently Asked Questions
Can I use dish soap on a flat top grill?
In small amounts occasionally, yes, but repeated use strips the seasoning. Water and scraping handle routine cleaning without that tradeoff.
How often should I deep clean my griddle?
Every 10-15 cooks under regular use, or sooner if you notice sticking, dullness, or heavy grease buildup that a quick scrape isn’t clearing.
Is it bad to clean a flat top grill with a wire brush?
Yes — bristles can snap off and end up in food. A metal scraper or nonabrasive pad does the same job more safely.
Do I need to re-season after every clean?
A thin oil wipe after every quick clean, yes. A full multi-coat re-season is only needed after a deep clean, since that’s the one that actually removes some seasoning.
Glenn is the founder of Kitchenware Compare and has spent years researching, testing, and reviewing kitchen appliances, cookware, and gadgets. A lifelong home cook raised in a family that treated every meal as an occasion, Glenn started this site to cut through the noise of conflicting product reviews and give readers honest, practical guidance. When he is not testing the latest air fryer or digging into the specs of a new espresso machine, he can usually be found experimenting with new recipes or hunting for the perfect cast iron skillet at a flea market.
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