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IPM is a prevention-first approach that denies pests access to food, water, and harborage, backed by inspection, sanitation, sealing entry points, and professional control only as needed. Daily blanket spraying is unsafe and ineffective, and relying solely on the exterminator ignores the sanitation that actually keeps pests out. Removing what pests need is the foundation of control.

Signs of mice include small dark droppings, gnaw marks on packaging, grease-rub marks along walls, and a musty odor. These are major concerns in NYC kitchens and must trigger cleaning and professional control. A bleach smell, clean shelves, or wet floors are not pest indicators.

The correct response is to clean up the infestation signs, eliminate the food, water, and harborage that attract roaches, and bring in a licensed pest professional. Ignoring the problem lets it spread, and spraying consumer pesticide near dishes causes chemical contamination. Only a licensed exterminator may apply pesticides in a food establishment.

Pesticides in a food establishment may be applied only by a licensed pest control professional, who knows safe products, placement, and how to protect food. Untrained staff or owners using consumer products risk contaminating food and using illegal or unsafe applications. The operation still must handle sanitation and exclusion to support the professional's work.

Denying harborage means sealing cracks, gaps, and holes, keeping storage off the floor and organized, and removing clutter where pests hide and breed. Cardboard piles, standing water, and torn bags all give pests shelter, water, and food. Good housekeeping and building maintenance are central to IPM.

Rats leave large droppings (about the size of a raisin), dig burrows near foundations and walls, gnaw large holes, and follow greasy runways. Spotting these signs requires immediate sanitation and a licensed exterminator. A pleasant scent, sealed storage, or fresh paint are not infestation indicators.

Inspecting incoming deliveries for pests, holes, and droppings, and quickly breaking down and discarding cardboard, keeps pests and their eggs from entering with supplies. Cardboard harbors roaches and provides nesting material, so it should not be stored. Propped doors and floor storage invite pests inside.

Flies are controlled by blocking entry (self-closing doors, screens, air curtains) and removing what attracts them (covered garbage, clean drains, no food debris). Spraying near food causes chemical contamination, and open doors let more flies in. IPM combines exclusion and sanitation rather than relying on one quick fix.

The three-compartment method is wash in hot detergent water, rinse in clean water, sanitize in an approved solution, and then air dry. Items must never be towel-dried, which recontaminates them. Doing the steps out of order or skipping the sanitizer leaves dishes unsafe.

A chlorine sanitizer for food-contact surfaces should be about 50 to 100 ppm. Too little (5-10 ppm) will not sanitize, and too much (500+ ppm) is a toxic chemical hazard and can corrode surfaces. Test strips must be used to verify the concentration.

Sanitizer concentration must be checked with the correct test strips (chlorine test strips for a chlorine solution) to confirm it is within 50-100 ppm. Smell, color, or taste cannot measure ppm and are unsafe methods. Solutions should be tested regularly because they weaken with use and time.

Cleaning removes visible soil, grease, and food debris with detergent, while sanitizing uses heat or chemicals to reduce pathogens on an already-clean surface to safe levels. A surface must be cleaned first, because sanitizer cannot work through dirt and grease. Both steps are needed to make food-contact surfaces safe.

A high-temperature (hot-water) dish machine sanitizes with a final rinse of about 180°F, which brings the dish surface temperature to roughly 160°F to kill pathogens. Temperatures like 100°F or 70°F are far too low to sanitize by heat. A temperature gauge or heat-sensitive label should confirm the machine reaches the required temperature.

Food-contact surfaces in continuous use with TCS food must be cleaned and sanitized at least every 4 hours to limit pathogen growth, and immediately when contaminated or when changing between different foods. Waiting until closing or until they look dirty allows pathogens to build up. Frequent cleaning is essential where food touches the surface.

Self-service and display food must be protected by properly positioned sneeze guards (food shields) and provided with serving utensils so customers do not touch or breathe directly on the food. Staff must monitor the bar and replace utensils as needed. A heat lamp or tablecloth does not shield food from coughs, sneezes, or hands.

Toxic chemicals must be kept in labeled original containers and stored in a designated area that is separate from and below food, utensils, and food-contact surfaces. Storing them above food, in unlabeled bottles, or mixed together risks chemical contamination and dangerous reactions. Proper labeling and separation prevent poisonings.

Handwashing sinks must have hot and cold running water, soap, and a means of drying such as single-use paper towels or a hand dryer, and must be kept accessible and unblocked. Cold water only, a shared cloth towel, or sanitizer alone do not allow proper handwashing. These sinks are reserved for handwashing, not food prep or dishwashing.

A blocked or unstocked handwashing sink prevents workers from washing their hands when required, directly increasing the risk of foodborne contamination. Handwashing sinks must always be accessible, unblocked, and stocked with soap and towels. The concern is food safety, not merely appearance or convenience.

Adequate lighting lets staff clean effectively and spot pests, food debris, and dirt, while ventilation removes grease, steam, heat, and moisture that would otherwise attract pests and promote mold. Both are facility requirements, not just aesthetics. Lighting is required in prep, storage, and warewashing areas, often with shatter-resistant shields over bulbs.

Garbage must be kept in covered, leak-proof, pest-resistant containers, removed frequently, and both the containers and storage area kept clean to avoid attracting pests and creating odors. Open cans, piles by the door, and uncovered dumpsters feed rats, roaches, and flies. Good waste management is a core facility and IPM requirement.

A reading of 25 ppm is too weak to sanitize, so more chlorine must be added and the solution retested until it falls within 50-100 ppm. Using a weak solution leaves surfaces unsafe, and adding water only dilutes it further. Test strips must confirm the correct concentration before use.

Sanitizer weakens over time and is deactivated by food soil, so a dirty, old solution must be discarded and a fresh batch mixed and tested. Continuing to use it or watering it down leaves surfaces unsanitized. Sanitizer must be kept clean and at the correct concentration throughout the shift.

In NYC, the Health Department assigns sanitary inspection scores based on violation points, and the lowest point range earns an 'A' — the best grade — which must be posted where the public can see it. More violation points result in a 'B' or 'C' grade. An 'A' signals the strongest inspection result, not a failure or closure.

The NYC letter grade is based on the number of violation points found during inspection: the fewest points earn an 'A', a moderate number a 'B', and the most a 'C'. Fewer points reflect better sanitary conditions. The grade card must be posted, giving the public a quick read on the establishment's inspection performance.

The letter-grade card must be posted where it is easily visible to people passing by or entering, typically the front window or door. Hiding it in an office or cooler defeats the transparency purpose and is itself a violation. Public posting lets customers see the establishment's most recent inspection result.

In-use wiping cloths should be kept submerged in a correctly mixed sanitizer solution (for chlorine, 50-100 ppm) between uses so they do not grow bacteria and spread it around. Leaving cloths dry on counters, in pockets, or on faucets lets pathogens multiply on them. The sanitizer bucket must be refreshed when it weakens or gets dirty.

Sanitized items must be allowed to air dry completely, because towel drying can recontaminate them and stacking wet dishes traps moisture where bacteria grow. Dishes should be placed to drain and dry fully before storage. Air drying preserves the sanitizing step's benefit.

Dry goods should be kept in tightly sealed, labeled containers at least 6 inches off the floor and away from walls, which denies pests food and makes it easy to clean and inspect. Bags on the floor, torn sacks, and food against walls give pests access and hiding routes. Off-the-floor, sealed storage is a key facility and IPM control.

A working sewage and plumbing system prevents wastewater backups and cross-connections that could contaminate food, water, and surfaces with pathogens — a serious health hazard requiring immediate correction, sometimes closure. It is far more than an odor or cost issue. Backflow prevention and properly draining floor drains are required facility features.

Denying pests water is a core IPM principle, so repairing the leak removes what draws the roaches, followed by cleaning and monitoring. Nightly spraying near dishes causes chemical contamination and does not fix the cause. Removing food, water, and harborage is more effective and lasting than repeated pesticide use.

Large stationary equipment is cleaned by unplugging it, removing detachable parts to wash, rinse, and sanitize, and cleaning then sanitizing the fixed food-contact surfaces in place before air drying. A dry wipe or sanitizer-only spray skips the cleaning that sanitizer needs to work. Slicers must be cleaned and sanitized at least every 4 hours in continuous use.

Displayed self-service hot food must be held at 135°F or above, protected by a sneeze guard, served with proper utensils (not customers' own cups), and monitored by staff. Removing the shield or letting customers use personal cups invites contamination. Both temperature control and physical protection are required for display food.

Managers must cooperate with the Health Department inspector, provide access to the establishment and records, and allow the inspection to proceed. Refusing entry, hiding records, or obstructing the inspector leads to penalties. Keeping the operation clean and compliant every day is the best preparation for an inspection.

Kitchen floors, walls, and ceilings must be smooth, durable, non-absorbent, and easy to clean, and kept in good repair so dirt and pests have nowhere to hide. Unsealed wood, cracked walls, and carpet absorb soil, harbor pests, and cannot be properly cleaned. Sound, cleanable surfaces are a basic facility requirement.

A sanitizer bucket must be kept low and away from food, prep surfaces, and food-contact items so a splash or spill cannot contaminate food. Placing it on prep tables, above food, or inside coolers risks chemical contamination. Chemicals, including in-use sanitizer, are always stored below and separate from food.

A pest-control log records sightings, conditions, and licensed-exterminator visits and treatments, helping the operation track and correct problems and demonstrate an active IPM program during inspections. It does not replace cleaning or exempt the operation from inspection. Good documentation supports both effective control and regulatory compliance.

Roaches thrive where there is grease, food debris, moisture, warmth, and dark hidden harborage such as behind and under equipment. Removing these — through deep cleaning, dryness, sealed storage, and sealing gaps — denies roaches what they need. Clean, dry, organized, well-lit spaces discourage them.

Even with a licensed professional, staff must protect food and food-contact items by covering or removing them from the treatment area to prevent chemical contamination. Leaving food exposed or adding their own pesticide creates a chemical hazard. Coordinating with the exterminator keeps the application safe and legal.

The order is wash, rinse, sanitize: detergent is rinsed away in the middle sink so leftover soap does not interfere with or weaken the sanitizer in the third sink. Sanitizing before rinsing, or rinsing off the sanitizer at the end, would leave items unsafe. After sanitizing, items are air dried, not rinsed.

A 'B' grade means the restaurant accumulated more violation points than the 'A' range, signaling conditions that need improvement, while a 'C' indicates the most points. It is not a closure and it is not the top grade. Operators should correct the cited violations to earn back an 'A' at re-inspection, and the grade must stay posted for the public.