Free Grease Trap Cleaning & Maintenance Checklist PDF

This free grease trap cleaning and maintenance checklist PDF tells your team exactly what to do every day, every week, when the trap reaches 25% full, and at every professional pump-out. It also lists the records inspectors ask for, so you can prove the work was done.

A neglected grease trap doesn’t just smell bad. It can shut your restaurant down. Clogged traps cause sewer backups, attract pests, and break municipal FOG (fats, oils and grease) rules, which can carry heavy daily fines in some jurisdictions.

That’s why we created this complete Grease Trap Cleaning & Maintenance Checklist. It covers daily FOG prevention, weekly inspections, in-house cleaning, professional pump-out requirements, and the documentation inspectors actually ask for.

You can also run this checklist on a phone or tablet with MaintainIQ, so every task has a due time and a record of who did it.

What’s Inside This Checklist

Six pages of practical tasks organized by frequency, so every member of your team knows exactly what to do:

• Daily FOG Prevention Tasks: Staff habits that keep grease out of the drain in the first place: plate scraping, oil disposal, drain strainer care, and making sure nobody pours chemicals into the trap.
• Weekly Inspection Tasks: Quick visual checks of grease level, odors, lid condition, flow restrictor and pipe connections to catch problems early.
• In-House Cleaning Procedure: Step-by-step instructions for cleaning the trap when FOG reaches 25% of capacity, including PPE, scooping technique, baffle removal, interior scrubbing and proper waste disposal.
• Professional Pump-Out Service: What to expect and check when your licensed grease hauler arrives: complete emptying (not just skimming), a structural inspection, manifest handling and hauler paperwork.
• Quarterly / Seasonal Inspection: Deeper checks, including FOG depth measurement with a dipstick, structural condition, flow rate testing, and schedule changes for busy seasons.
• Documentation & Compliance: Maintenance log requirements, hauler manifest retention (often 3–5 years, so check your local rules), repair tracking, and what inspectors actually ask to see during a visit.

Why Grease Trap Maintenance Matters

• Avoid Sewer Backups: A grease trap that goes past 25% of capacity can no longer separate FOG from wastewater properly. Grease escapes into the municipal sewer lines and causes blockages that get traced back to your business.
• Stay Compliant: Many U.S. municipalities require grease trap cleaning at least every 90 days. Inspectors check trap condition, FOG levels and your maintenance records. Missing documentation is treated the same as missing maintenance.
• Prevent Fines: FOG violations carry serious penalties, and in some jurisdictions they are charged per day. Repeat violations can lead to forced closure or sewer line repair costs billed directly to your business.
• Protect Your Reputation: A backed-up grease trap creates foul odors, attracts pests (a pest control inspection checklist helps you catch them early), and can flood your kitchen with wastewater during service. Wet, greasy floors are also a slip hazard, one of the risks OSHA’s walking-working surfaces rules cover. One incident like this on a busy night can cost you a lot of revenue and do lasting damage to your reputation.

The 25% Rule

The industry standard for grease trap cleaning is the “25% rule”: when FOG and solids fill 25% of the trap’s total capacity, it’s time to clean. At this point, the trap can no longer separate grease from wastewater well, and FOG starts escaping into the sewer system.

How quickly you reach 25% depends on your kitchen’s volume and menu. As a general guide:

Tip: Check your trap’s FOG level weekly for the first month to learn your kitchen’s fill rate. Then set a recurring schedule based on what you measured, not guesswork.

Grease doesn’t only build up in the trap. Your hoods and ducts collect it too, so pair this list with a commercial kitchen hood and exhaust cleaning checklist, and see these overlooked kitchen areas that need deep cleaning.

How to Use This Checklist

• Post the daily page in the kitchen near the 3-compartment sink so staff know what’s expected.
• Use the weekly inspection page during your manager walkthrough.
• Follow the in-house cleaning procedure step by step whenever the trap gets close to 25% of capacity.
• Hand the professional pump-out page to your grease hauler to check they complete every step.
• Keep the documentation page in your compliance binder. It’s the first thing inspectors ask for.
• Check drains and pipes on the same walkthrough with a plumbing and water heater maintenance checklist.
• Or go digital and run the whole process as scheduled checklists, with tasks assigned to people and a record of who did each task and when.

Go Digital with MaintainIQ

A paper checklist is a great start. Running your grease trap maintenance in MaintainIQ, a checklist and maintenance app, makes it easier to stay on schedule and prove the work was done:

• Digital checklists set up for your trap size and cleaning frequency.
• Due times and preventive maintenance schedules that show which daily, weekly and pump-out tasks are due and which are overdue, with your preferred grease hauler saved on the equipment.
• Logging on iPhone, iPad, Android and the web, so inspections can be completed from any device.
• A dashboard and daily summary emails so managers can check completion without being on site.
• All your records in one place for audits, inspections and insurance paperwork.

Whether you manage one kitchen or dozens, a preventive maintenance app that remembers what is due keeps every trap on schedule. Download your free checklist today, and pair it with MaintainIQ to schedule and simplify your grease trap maintenance program.