A restaurant kitchen gets dirtier faster than almost any other commercial space, grease accumulates on every surface, cross-contamination risk is constant, and the health department isn’t interested in excuses. Cleaning a restaurant kitchen correctly isn’t just about appearance. It’s about food safety, employee health, fire prevention, and keeping your operating license.
Here’s the practical breakdown of how it’s done, broken down by timing and zone.
Before. During, and After Service: The Three-Phase Approach
Restaurant kitchen cleaning isn’t a once-a-day task. It happens in phases tied to your service schedule.
Before Service
Before the first ticket goes in, these tasks set the baseline:
- Inspect all prep surfaces and wipe down with sanitizer solution
- Check that all equipment is clean from the previous close (and re-clean if not)
- Verify soap, sanitizer, and paper products are stocked in all stations
- Confirm drain covers are in place and functioning
- Inspect walk-in cooler/freezer door seals and interior surfaces
During Service
The goal during a shift is containment, keeping spills and cross-contamination from compounding:
- Wipe down prep surfaces between tasks, especially when switching protein types
- Address spills on floors immediately, a wet kitchen floor during a rush is a liability
- Empty and sanitize bus tubs and prep containers as they’re cleared
- Keep handwashing stations unobstructed and fully stocked
- Monitor the dish pit to ensure sanitizer levels stay in range
After Service (End-of-Night Close)
This is the most important clean of the day. Everything should reset to a state where the next crew can work safely:
- Scrape and clean all grills, griddles, and flat tops while still warm (cooled grease is harder to remove)
- Degrease hood filters and wipe down the hood interior
- Break down and sanitize all prep equipment: slicers, mixers, mandolines
- Sanitize all prep surfaces, cutting boards, and table edges
- Clean and sanitize sinks (prep, hand-wash, and dish)
- Mop floors with degreaser, starting from the back and working toward the drain
- Empty all trash and grease containers
- Wipe down exterior surfaces of all refrigeration units
- Run the dishwasher empty at the end to clean the interior
Zone Breakdown: Every Area Has Its Own Protocol
A restaurant kitchen isn’t one space, it’s several different environments that each need a specific approach.
Prep Surfaces and Cutting Boards
The highest cross-contamination risk in any kitchen. Protocol:
- Clean (remove debris), rinse, sanitize, in that order, every time
- Bleach solution for food contact surfaces: approximately 1 tablespoon of unscented bleach per gallon of water
- Wood cutting boards need to be replaced when they develop deep scoring, no amount of sanitizing makes them safe once they’re grooved
- Stainless steel prep tables should be wiped with sanitizer between tasks and fully cleaned after each service period
Cooking Equipment: Grills. Fryers, and Ovens
Grills and griddles: Scrape after every service, degrease and re-season weekly. Flat tops that aren’t scraped while warm develop carbon buildup that’s much harder to remove.
Fryers: Oil quality needs daily monitoring. Full drain, clean, and refill weekly (or more often, depending on volume). Interior baskets and fryer walls need degreasing every 1–2 days. A neglected fryer is a fire risk.
Ovens: Commercial ovens should be wiped down daily on interior surfaces. Full deep clean monthly, pull out the racks and soak them, clean the interior walls and heating elements.
The Exhaust Hood
Most restaurant fires start here. The hood and filters accumulate grease faster than any other surface. Pennsylvania requires commercial exhaust hoods to be professionally cleaned on a schedule, typically quarterly for moderate-volume kitchens, monthly or bi-monthly for high-volume operations. This is not optional.
Daily hood maintenance includes wiping down the hood surfaces and cleaning the grease drip channels. But professional hood cleaning, which involves breaking down and cleaning the plenum, ductwork, and fan, requires certified technicians and proper documentation.
Floors and Drains
Restaurant kitchen floors need a two-step process: degreaser followed by mop, every night. Standard mopping without a degreaser just moves the grease around.
Drains are the most neglected area in most kitchens. Drain baskets should be cleaned nightly. Drains should be flushed with hot water and an enzyme-based cleaner weekly to prevent buildup and odor. A blocked drain in a commercial kitchen isn’t just an inconvenience, it can cause health code violations.
Sinks
Three compartments: wash, rinse, sanitize. The sanitizer compartment needs to be tested regularly with test strips to confirm it’s within effective range. Hand-wash sinks need to be clear and accessible at all times, blocked hand-wash stations are an immediate health code flag.
Sanitizing vs. Disinfecting: Understanding the Difference
These terms mean different things and the distinction matters in a commercial kitchen.
Cleaning removes visible dirt and food debris. It’s the first step, not the only step.
Sanitizing reduces pathogens on food-contact surfaces to safe levels for public health. Required on all prep surfaces, cutting boards, equipment that touches food, and dish items. Standard sanitizer solutions include bleach (1 tbsp/gallon), quaternary ammonium compounds, or iodine-based solutions at appropriate concentrations.
Disinfecting kills a broader spectrum of pathogens and is used in non-food-contact areas: restrooms, door handles, trash areas.
The common mistake is sanitizing without cleaning first. Sanitizers don’t work effectively on dirty surfaces, the debris blocks contact with the pathogens. Always clean before you sanitize.
Common Mistakes That Lead to Health Code Violations
Pennsylvania health inspectors know exactly where to look. The most frequently cited issues in commercial kitchen inspections:
- Cross-contamination setup, raw proteins stored above ready-to-eat foods in reach-in coolers; no color-coded cutting boards or boards shared between protein types
- Sanitizer solution not tested, inspectors check concentration; too weak is a violation, too strong can be unsafe for food contact
- Hood cleaning out of date, missing documentation or visible heavy grease buildup
- Handwashing station issues, missing soap, paper towels, or signage; or sink used for food prep
- Pest entry points, gaps around plumbing penetrations, damaged door seals, food debris in hard-to-reach areas
- Temperature logs not maintained, not technically a cleaning issue, but inspectors look at the whole picture of food safety culture
When to Call in Professional Cleaners
Your kitchen staff handles daily and end-of-shift cleaning. Professional commercial kitchen cleaners cover the jobs that are too time-intensive or specialized for in-house crews:
- Hood and duct cleaning: Required by code, requires certified technicians
- Grease trap service: Needs a licensed grease trap service provider; frequency depends on volume
- Monthly or quarterly deep cleans: Full equipment breakdown and cleaning, behind and underneath all equipment, tile and grout cleaning, drain cleaning beyond nightly maintenance
- Post-inspection remediation: If you’ve received a health department notice, professional documentation of the remediation matters
- Pre-opening or renovation cleans: When equipment has been moved or the kitchen hasn’t been operational
Excellence Janitorial Services works with restaurants throughout Luzerne County and surrounding Pennsylvania communities. Commercial kitchen cleaning requires specific protocols and food-safe products, it’s not the same as general janitorial service.
FAQ
How often should a restaurant kitchen be deep cleaned?
A true deep clean, pulling equipment away from walls, cleaning inside and underneath, scrubbing tile and grout, full hood service, should happen monthly for most kitchens. High-volume operations may need it every two weeks. The baseline cleaning happens every day; the deep clean catches what daily cleaning can’t reach.
What’s the correct sanitizer concentration for food contact surfaces?
For bleach-based sanitizer: approximately 1 tablespoon (about 50–100 ppm) of unscented household bleach per gallon of water. For quaternary ammonium (quat) sanitizers: follow the manufacturer’s specification, usually around 200–400 ppm. Always use test strips to verify concentration. Check state and FDA Food Code guidelines for current requirements.
Do I need a professional to clean the exhaust hood?
Yes. NFPA 96 (the fire code standard for commercial cooking operations) requires exhaust hoods and ductwork to be professionally cleaned on a schedule based on cooking volume and type. In Pennsylvania, this is enforced through fire marshal inspections. Professionals must provide a certificate of service with each cleaning.
Can kitchen staff clean the grease trap?
Grease trap cleaning typically requires a licensed waste hauler, especially for below-ground traps. Above-counter grease traps can often be cleaned in-house, but the waste must be disposed of properly, not poured down the drain. Check with your local municipality for specific requirements in Luzerne County and surrounding areas.
What cleaning products are safe to use in a commercial kitchen?
All cleaners and sanitizers used on food-contact surfaces must be food-safe and approved for commercial kitchen use. Look for NSF International certification on commercial kitchen products. Avoid mixing cleaning chemicals, especially bleach and ammonia-based products. For non-food-contact surfaces like floors and drains, commercial degreasers and enzyme-based cleaners are appropriate.
How do I know if my kitchen is failing a health inspection before the inspector arrives?
Walk your kitchen the way an inspector would: check cooler temperatures and storage organization (raw proteins below ready-to-eat), verify handwashing stations are stocked and accessible, test your sanitizer solution with test strips, look at your hood service date, and check for pest activity signs. A clean kitchen that fails inspection is usually failing on documentation, missing logs, missing certifications, or missing labels.