Your line cooks can keep the cook line running clean every night. What they can’t reach is the grease that bonds to the wall behind the fryer, cakes under the flat top, and hardens inside the fryer vat over weeks of service. That gap is the whole reason a degreasing service exists.
Here’s the clean division. Nightly cleaning is your crew’s job: scrape the griddle, wipe the stainless, filter or boil out the fryer, and mop the line. Periodic deep degreasing is a service’s job: the bonded carbon, the hidden zones behind and under the equipment, and the heavy buildup a busy kitchen never has time to touch.
Get that line wrong and one of two things happens. You either pay a service to do work your crew should handle nightly, or you leave the dangerous buildup to a crew that has neither the time nor the chemicals for it. The zone that decides which one you’re doing is the one nobody can see without pulling the equipment away from the wall.
The Nightly Job: What Your Crew Handles Every Close
Most of the cook line is a nightly responsibility, and it belongs to the people who cooked on it. None of this needs an outside service. It needs a checklist and ten disciplined minutes at close.
A solid nightly routine covers:
- Scrape and wipe the flat top while it’s still warm, then re-season or polish it depending on the surface.
- Filter the fryer oil and wipe down the exterior, the baskets, and the cabinet.
- Degrease the stainless on the range, the shelving, and the splash guards with a hot detergent solution.
- Pull the floor mats and mop underneath, including the front lip of the line where drips collect.
- Empty and wipe the grease trough on the griddle so it doesn’t overflow onto the burners.
The reason this matters goes beyond appearances. Grease that gets wiped nightly never gets the chance to bond. Grease left overnight, then cooked back on the next day, is exactly what turns into the caked buildup only a service can remove.
Nightly discipline is the cheapest deep clean you’ll ever buy. For the full station by station routine, our guide on how to clean a restaurant kitchen walks the whole close.
Flat Tops and Griddles: Nightly Scrape, Weekly Deep Clean
The griddle is the piece most crews clean wrong, and the mistake usually comes down to one thing: the surface material.
Nightly, let the griddle cool to around 300 degrees, then scrape the whole surface with a griddle scraper, working toward the grease trough. Coat it with a little water or mild detergent, clear the residue with a non-abrasive pad, and finish with a thin film of oil to protect the surface.
Weekly in a high volume kitchen, the griddle needs a deeper pass to lift the bonded carbon that daily scraping leaves behind. This is where the material decides the method:
- Steel griddles can take a grill brick or pumice stone. Work in small circles with moderate pressure, then re-season: heat the plate to about 350 degrees, spread a thin layer of oil, let it sit, and wipe it down.
- Chrome griddles must never see an abrasive. A grill brick or scouring screen will scratch the plate and can void the warranty outright. Chrome gets a scraper while hot and a polish with a dry cloth, nothing rougher.
A monthly deep clean, or a biweekly one in a heavy kitchen, takes the plate all the way back to bare. That job, done right, is a natural handoff point to a service, especially when the buildup has spread past the plate and onto everything around it.
The Fryer: Daily Oil, Weekly Interior, Monthly Boil Out
The fryer runs on three separate clocks, and the crew owns all three.
Daily: filter the oil and wipe the exterior. A quick outside wipe every night is what keeps the eventual deep clean from becoming a two hour ordeal.
Weekly: drain the oil, and clean the fry pot and baskets with detergent and hot water.
Monthly: run a boil out. This is the deep clean that dissolves the polymerized grease scrubbing can’t touch. The steps are straightforward, but the safety line is not optional:
- Turn the fryer off and let the oil cool to no warmer than 170 degrees before you touch it. Hot oil causes severe burns, and this is where people get hurt.
- Drain the oil into an approved caddy, then clear the drain line.
- Fill the vat with cool water to within a few inches of the top, and add a fryer boil out cleaner per the label.
- Simmer slowly for 20 to 30 minutes. Keep it at a low boil so nothing splashes over the side.
- Cool, drain, scrub the sides and elements with a long handled brush, rinse, and dry the vat completely. Oil and water don’t mix, so any water left behind is a hazard on the next heat up.
If your team is stretched too thin to run the monthly boil out safely, that’s the honest signal to hand it off. A rushed boil out is worse than a skipped one.
Behind and Under the Equipment: Where the Grease Actually Hides
Here’s the zone from the opening, the one you can’t see without moving the line. It’s also where most of the real risk lives.
Grease doesn’t stay on the cooking surface. It aerosolizes, drifts, and settles on the wall behind the range, the sides and backs of every unit, and the floor underneath where a mop never reaches. It builds slowly, out of sight, which is exactly why it gets skipped. Up to 60 percent of commercial kitchen fires start in the cooking area, and hidden grease buildup is one of the most preventable causes.
It’s a health problem too, not just a fire one. A grease coated wall behind the cooking line is a citable violation, and kitchens routinely fail inspections not because the visible surfaces look dirty but because of the buildup in the spots routine cleaning never touches. If you want to see how inspectors treat this in your area, our Pennsylvania restaurant health inspection guide covers what they actually check.
This is the work that almost never fits into a nightly close. Pulling equipment out, degreasing the wall and floor behind it, and clearing the sides and backs takes time, muscle, and chemicals a line crew doesn’t have at 11pm. It’s the clearest example of a service’s territory.
What a Degreasing Service Does That Your Crew Can’t
A professional degreasing service isn’t doing your crew’s nightly job for more money. It’s doing the job your crew structurally can’t, and the difference comes down to three things.
- Time. Deep degreasing means moving equipment and working zones a running kitchen never closes long enough to reach. A service comes in during off hours and takes the hours it needs.
- Chemicals and equipment. Bonded carbon and polymerized grease need stronger degreasers, dwell time, and often heat or pressure. That’s a different toolkit than the spray bottle on the line.
- The hidden zones. Behind, under, and on top of the equipment, plus the heavy buildup on the range body itself, is the core of what you’re paying for.
How often you need it depends on your volume and your menu. A high output fry and griddle kitchen builds grease faster than a bakery, so the right cadence is the one that matches your cooking, not a generic number. Our breakdown of how often a restaurant kitchen should be cleaned helps you set that schedule.
One boundary matters here: the exhaust hood, filters, and the duct above them are a separate certified trade. Kitchen exhaust cleaning is regulated under NFPA 96 and has to be done by a certified company that documents the work for your insurer and inspector.
A general degreasing service handles the cook line and the surfaces around it. The hood and duct system is its own job. When you’re comparing providers, knowing which side of that line each one covers is part of vetting a commercial kitchen cleaning company properly.
How to Split the Work Without Overpaying
The decision is simpler than most owners make it. Draw the line by frequency, not by task.
- If it needs doing daily or weekly, it’s your crew’s job: the nightly scrape, the oil filtering, the weekly griddle deep pass, the monthly boil out. Build it into a written close checklist and hold the line on it.
- If it needs doing monthly or a few times a year, and it involves moving equipment or lifting bonded buildup, hand it to a service. That’s the behind and under work, the full range degrease, and the recovery jobs when a station has fallen behind.
- If it’s the hood or exhaust duct, it goes to a certified NFPA 96 company, always, on the schedule your fire code and insurer require.
The kitchens that overpay are the ones that hand a service work their crew skipped last night. The kitchens that get burned, sometimes literally, are the ones that assume the wall behind the fryer is somebody else’s problem. Draw the line by frequency, keep the nightly close honest, and the only thing left for a service is the grease you were never going to reach with the line running.
Frequently Asked Questions
How often should you deep clean a commercial griddle?
Scrape and wipe it every night. In a high volume kitchen, do a deeper pass weekly to lift bonded carbon, and take the plate fully back to bare monthly, or biweekly if you run it hard. Match the cadence to how much you actually cook on it.
Can you use a grill brick on a chrome griddle?
No. Abrasives like grill bricks and scouring screens will scratch a chrome plate and can void the warranty. Chrome gets scraped while hot and polished with a dry cloth. Grill bricks are only for steel griddles.
How often should you boil out a deep fryer?
About once a month for most kitchens, and as often as weekly in high volume ones. Filter the oil daily and clean the pot and baskets weekly between boil outs. Always let the oil cool to under 170 degrees before you start.
Is grease behind cooking equipment a health or fire violation?
Both. A grease coated wall behind the cook line is a citable health violation, and hidden grease buildup is a leading cause of commercial kitchen fires, with up to 60 percent of them starting in the cooking area. It’s one of the most preventable risks in the kitchen.
Does a cleaning service also clean the exhaust hood?
Usually not the same visit. A degreasing service handles the cook line and surrounding surfaces. The exhaust hood, filters, and duct fall under NFPA 96 and must be cleaned by a certified kitchen exhaust company that documents the work. Confirm which scope a provider covers before you book.
What does a restaurant cleaning service do that my staff doesn’t?
The work your crew structurally can’t reach during service: moving equipment to degrease behind and underneath it, lifting bonded carbon and polymerized grease with commercial chemicals and dwell time, and the heavy recovery cleaning when a station has fallen behind. Nightly surface cleaning stays with your crew.