How to Clean a Grease Trap: A Guide for Commercial Kitchens

Did you know a clogged grease trap can overflow in just one day of heavy use? That’s not just a mess—it’s a health hazard and a code violation waiting to happen for your commercial kitchen. If you’ve got a grease trap under the sink, it needs attention before things back up, slow down, or shut down your kitchen.

This guide explains how to clean a grease trap, why it matters, and what it takes to keep everything flowing properly. Whether you’re dealing with the common under-the-sink grease trap or a larger external system, staying ahead of buildup means fewer problems for your business. Read on!

Grease Trap Basics & Cleaning Steps

Cleaning a grease trap protects the drain and keeps the whole kitchen safe, clean, and compliant. These devices catch fats, oils, and grease before they enter your plumbing. Without regular cleaning, clogs build fast and block your entire commercial kitchen plumbing system. Here’s how the cleaning process goes:

1) Disconnect Power and Water

Safety comes first. Shut down the water supply and appliances connected before starting.

2) Remove the Lid Carefully

Use a pry tool or wrench, depending on your trap’s design. Some lids are bolted, so have the right tools handy.

3) Check Grease and Water Levels

Note how full the trap is. This helps you plan your grease tank cleaning schedule better and spot unusual buildup.

4) Scoop Out the Grease

Use a ladle or bucket to remove the thick layer of grease. This step keeps solids from clogging pipes and messing with drainage ventilation.

5) Remove and Clean the Baffle

This part separates solids from liquids. Scrub it thoroughly—buildup here blocks flow and creates odors.

6) Clean the Tank Interior

Scrape and wash down the tank walls. Use hot water to loosen the residue before it hardens.

7) Check for Signs of Trouble

Look for cracks, corrosion, or water that won’t drain. These could point to bigger drain issues.

Why You Need a Pro for Grease Trap Cleaning

Cleaning a grease trap might seem simple, but there’s more to it than scooping and scrubbing. Over time, thick grease layers harden and block flow deep in the lines—spots that manual cleaning can’t reach. That’s where a professional plumber can help. One of their most effective methods is hydrojetting services, which use high-pressure water to cut through hardened buildup inside pipes and restore full flow.

An expert plumber also knows how to spot early warning signs, like improper drainage or equipment damage, before they cause bigger problems. They ensure your system meets health codes and stays efficient through regular service.

Keep Your Business Kitchen Running Clean with Righty Tighty Plumbing

At Righty Tighty Plumbing, we know the ins and outs of plumbing maintenance—especially when it comes to greasy, gunky traps. We offer full-service grease tank cleaning using the right tools, reliable schedules, and expert inspection.

Serving New Market, TN, and nearby areas, we help kitchens stay clean, safe, and open for business. Whether you need monthly service or emergency help, we’ll keep your system flowing. Book a service today and give your drains the attention they deserve!

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Aaron Benoit

Aaron Benoit

Aaron Benoit, founder of Righty Tighty Plumbing, has been dedicated to plumbing since high school. With over ten years of experience, he offers expert residential and commercial plumbing services. Aaron is committed to quality care, treating every property as his own, and ensuring customer satisfaction. Available 24/7, he handles everything from leaky pipes to large installations.

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