How to Pass a Grease Trap Inspection: What Health and FOG Inspectors Actually Check

If you run a restaurant, grocery store kitchen, or bakery, grease trap inspections are part of doing business. Luckily, most inspections are straightforward and easy to pass with the right preparation. Inspectors are simply looking for consistent grease management, proper maintenance, and clear records.

Baker Commodities helps commercial kitchens stay inspection-ready with scheduled grease trap and interceptor cleaning, used cooking oil collection, and service documentation.

Below, we’ll explain what inspectors usually check, why kitchens fail inspections, and how to prepare before your next visit.

Grease Trap Inspections

There are generally two types of grease trap inspections: health inspections and FOG (Fats, Oils, and Grease) inspections.

Health vs. FOG Inspections

Health inspectors focus on sanitation and food safety, so they look at basic cleanliness, odors, and whether your kitchen meets health standards.

FOG inspectors focus specifically on your grease management. They want to make sure you can prevent fats, oils, and grease from entering the sewer system, where they can cause clogs and damage city infrastructure.

How Often Inspections Happen

For most kitchens, inspections happen every three to six months. If you have a high-volume kitchen, inspections can happen more often.

If your business produces a lot of grease, like a fast food restaurant or a busy fryer-based kitchen, you might see inspections more often.

What Inspectors Actually Look For

An inspection can feel nerve-wracking, but there are only a few key areas you need to focus on.

Grease Trap Condition

Inspectors first check your grease trap. They want to see how much grease has built up inside the trap. A common standard is the 25% rule, which means if grease and solids take up more than 25% of the trap’s capacity, it is considered overdue for cleaning.

Additionally, they will check for:

• Cracks, leaks, damage
• Properly sealed lids
• Easy and safe access to the trap
• Baffles that are properly installed and functioning inside the trap

Cleaning and Maintenance Records

Inspectors want to know that your grease trap is being cleaned and serviced regularly. Typically, they look for pumping or cleaning frequency, service invoices, and service documentation from a licensed service provider.

In many areas, you should have 6-12 months of records available to review. Working with Baker Commodities makes this easier, since each service can be documented, giving your managers clear records to keep on file for future inspections. Baker also offers access to a customer portal where you can access your documents 24/7.

Odors and Sanitation

If your grease trap has not been cleaned regularly, it can cause strong odors. Inspectors will check the area around the grease trap for the following:

• Lingering or strong smells
• Grease residue on floors or walls
• Spills or poor cleanup practices

Plumbing and Flow

Once grease flows down the drain, it should enter the trap and be captured properly. If grease isn’t captured, it can get into the sewer and cause major issues. Inspectors may look for:

• Slow drains or backups
• Signs that grease is bypassing the trap
• Improper connections or modifications

Kitchen Practices

It’s important for your staff to be trained on all rules and regulations. Even small habits can affect whether your grease trap works correctly. Inspectors often look for:

• Are sink strainers in place
• Do you maintain proper food waste disposal
• Is there evidence of grease being poured down the drain

The Most Common Reasons Kitchens Fail

While kitchens can be fast-paced and focused on preparing food, it’s important to follow the basic requirements of a grease trap inspection. Here are the most common reasons that commercial kitchens fail.

Infrequent Cleaning

Not cleaning your grease trap regularly is the most common reason. If your kitchen waits too long between cleanings, grease can quickly build up past the 25% threshold. Try to maintain regular cleanings every 30, 60, or 90 days, depending on the volume of grease you produce.

Missing or Incomplete Records

Inspectors want to review all records of all cleaning and maintenance services. Common problems include no logbook or digital records, lost invoices, and inconsistent documentation.

Hiring a service provider like Baker Commodities helps you keep consistent records, which makes it easier to show inspectors that your grease trap is maintained regularly.

Improper Disposal Practices

If your staff pours grease down the drain, this will create an immediate issue with your inspection. Other issues can include:

• Using additives that push grease into the sewer instead of capturing it
• Letting food waste enter drains without proper filtering

Even if your grease trap is serviced regularly, these habits can cause you to fail the inspection.

Equipment Issues

Your grease trap needs to be in good working order. If you have broken or missing lids, damaged or missing baffles, cracked tanks, leaking components, or an undersized trap for your kitchen’s output, this can be a problem.

Grease trap baffles are especially important because they help slow the flow of wastewater and keep fats, oils, grease, and food solids separated inside the unit. When baffles are damaged, loose, or missing, grease can pass through the trap too quickly and enter your plumbing lines. This can lead to odors, clogs, backups, and compliance issues.

Baker Commodities provides grease trap repair services to help commercial kitchens fix equipment problems before they become larger issues. Our team can inspect your grease trap or interceptor, identify visible damage, and recommend the right repair or service solution.

Baker Commodities also offers equipment options that can help your kitchen manage grease more safely and effectively, including indoor containment tanks, outdoor containment tanks, pipe locks, fresh oil systems, and drain filter systems.

How to Prepare Before an Inspection

Before your next inspection, you can follow a handful of simple steps to make sure you pass.

Maintain a Regular Cleaning Schedule

Set a schedule based on how much grease your kitchen produces.

For example:

• Light use: every 60-90 days
• Moderate use: every 30-60 days
• Heavy use: every 2-4 weeks

If your menu or volume changes to generate more grease, remember to adjust your schedule.

Keep Records Organized

Each time your grease trap is serviced, be sure to keep a record of it. Keep all of the records together and easily accessible by all managers on duty. This might be a binder with hardcopies, or a digital folder that is easy to access.

Make sure you can quickly show: 1) dates of service, 2) who performed the service, and 3) what was done.

Do a Quick Self-Check

Before the inspection, spend a few minutes checking your grease trap. Look for grease levels above 25%, odors or spills, and slow drains. Clean the area around the trap and make sure the lid is secure. A clean and maintained setup can go a long way.

Train Your Staff

Your staff is the first line of defense against grease trap problems. A few simple training directives can reduce buildup and keep your restaurant compliant.

• Never pour grease down drains
• Scrape plates into trash before washing
• Use strainers and proper waste disposal

What Happens If You Fail an Inspection

While a failed grease trap inspection doesn’t automatically mean you will be shut down, it does create extra work, additional costs, and tighter oversight.

In most cases, you will receive a written notice that outlines the issues, along with a deadline to correct it. If the issues aren’t resolved for the follow-up inspection, you may incur penalties.

The fines vary by city, but re-inspection fees and other costs can add up quickly, especially if you have repeat violations.

FAQs: Grease Trap Inspections

How often should a grease trap be cleaned?

Most kitchens need service every 30-90 days. High-volume kitchens may need cleaning every 2-4 weeks. It’s important to keep grease and solids below 25% of the trap’s capacity.

What is the 25% rule for grease traps?

The 25% rule means grease and solids should not exceed 25% of the trap’s total capacity. Once you pass that level, the trap is no longer working effectively and may fail inspection.

What records do inspectors ask for?

Inspectors typically want to see service logs, pumping records, and invoices from a licensed provider. You should keep at least 6 to 12 months of records on-site and easy to access.

What are the most common grease trap violations?

The most common issues include infrequent cleaning, grease buildup over 25%, missing records, strong odors, and evidence of grease being poured down the drain.

Contact Baker Commodities to Stay Inspection-Ready

It’s easier to stay compliant when you have a reliable service partner. Baker Commodities helps you set a regular schedule based on your kitchen’s output. This keeps your trap below the 25% threshold and ready to pass inspections.

Baker Commodities works with restaurants, cafeterias, grocery stores, bakeries, and other commercial kitchens to keep grease traps properly maintained and documented.