How Often Should a Commercial Grease Trap Be Cleaned?
Why Grease Trap Timing Matters
A grease trap catches fats, oils, and grease before they reach the sewer. Regular commercial grease trap cleaning keeps your kitchen legal, clean, and running. At The Sewer Kings, we service traps for restaurants and businesses across South Jersey.
Wait too long and the trap overflows into your lines. That means backups, foul smells, and a shutdown you cannot afford.
The Sewer Kings keeps kitchens across the region on a schedule that fits their real cooking volume.
So how often is often enough? The answer comes down to one simple rule.
The One-Quarter Rule for Grease Traps
The industry standard is simple and easy to follow.
Clean at One-Quarter Full
Clean the trap once fats, oils, and solids fill about a quarter of its total depth. Past that point, the trap stops working the way it should.
Most Kitchens: Every Few Weeks to Months
A busy restaurant may hit that mark in a matter of weeks. A lighter-use kitchen may go a couple of months. Volume decides the pace.
Track and Log It
Keep a cleaning log. It proves compliance to inspectors and helps you spot when your kitchen’s pace is speeding up.
Know Your Local Rule
Some towns set their own maximum time between cleanings, no matter how full the trap is. We help you stay inside your local limit.
What Changes How Often You Need Service
No two kitchens fill a trap at the same rate. A few things set your schedule.
How Much You Cook
High-volume kitchens and fryer-heavy menus push far more grease into the trap. More cooking means more frequent cleaning.
Trap Size
A small under-sink trap fills fast and needs frequent service. A large in-ground interceptor holds more and can go longer between visits.
Your Menu
Fried and fatty foods load a trap quickly. A menu light on grease fills it more slowly.

What Happens If You Wait Too Long
Skipping service does not save money. It creates bigger bills and real headaches.
Backups and Odors
An overfull trap sends grease into your drain lines. That leads to slow drains, backups, and smells that drive customers away.
Fines and Violations
Health inspectors check grease traps. A neglected trap can bring fines or even a forced closure until it is fixed.
The Sewer Kings sets a service schedule that matches your kitchen, so you stay clean, compliant, and open for business.
Pest Problems
Overflowing grease draws drain flies and roaches. A pest issue in the kitchen can fail a health inspection all on its own.
Bigger Repair Bills
Grease that escapes the trap hardens inside your drain lines. Clearing a grease-packed main costs far more than routine trap service.
Signs Your Grease Trap Needs Service Now
Even with a schedule, watch for these signs that your trap needs attention right away.
Slow Drains in the Kitchen
When sinks and floor drains start to back up, the trap is likely full and pushing grease into your lines.
Foul Odors
A rotten smell near the trap or drains means grease is breaking down and overflowing. That odor spreads to your dining area fast.
Grease Showing at the Trap
Visible grease at the lid or a trap that looks packed to the top is a clear call for immediate service.
Flies and Pests
Drain flies and other pests feed on trapped grease. A sudden bug problem near the kitchen often points back to a full trap.
Commercial Grease Trap Cleaning FAQ
Can I clean my grease trap myself?
Small traps can be scooped by staff, but it is messy and the waste needs proper disposal. A pro service is faster, cleaner, and keeps your records straight.
What happens to the grease you remove?
We haul it away and dispose of it at a licensed facility. That keeps you compliant and keeps the grease out of the sewer system.
Do you offer scheduled grease trap service?
Yes. We set a routine schedule based on your kitchen’s volume, so your trap never gets past the point where it causes trouble.
Talk to a Local Drainage Expert Today
The Sewer Kings is a family-run drainage and sewer company serving Evesham and all of South Jersey.
Call The Sewer Kings at 609-357-0547. We provide grease trap cleaning and related drainage services throughout South Jersey, available 24/7 for emergencies.