The trap backs up on a Friday night, grease comes up through the floor drain, and the first call is to the cleaning company. Wrong number.
Your restaurant cleaning company doesn’t do grease trap service. Pumping the trap belongs to a licensed liquid waste hauler who removes the fats, oils, and grease, hauls it off to an approved disposal site, and leaves you a signed manifest.
Your cleaning crew keeps the area around the trap clean, handles your floor drains, and tells you when the trap is filling, but the pump out itself is a separate, permitted trade. There’s one piece of paper the hauler leaves behind that an inspector will ask for, and most owners throw it away.
Knowing who owns which part of the trap keeps the backup from happening and keeps your kitchen legal.
What grease trap service actually is
A grease trap catches fats, oils, and grease, together called FOG, before they reach the sewer. Left alone, that FOG hardens, blocks your lines, and eventually comes back up through the lowest drain in the kitchen.
Grease trap service is the pump out and cleaning of the trap itself:
- Vacuuming out the accumulated FOG and food solids
- Scraping and cleaning the trap’s internal baffles and walls
- Checking that the trap is sealing and draining correctly
- Hauling the waste off to an approved disposal site
How often depends on how fast the trap fills. The standard is the 25 percent rule: service the trap before FOG and solids reach a quarter of its total depth. For most kitchens that lands somewhere between monthly and quarterly, and we break the threshold down in our guide to how often grease traps should be cleaned. Indoor traps fill faster and get serviced more often; large outdoor interceptors hold more and can stretch longer.
Why your cleaning company doesn’t pump the trap
This isn’t a cleaning company dodging work. It’s a licensing line.
Grease trap waste is regulated. In most places the FOG has to be removed and transported by a licensed liquid waste hauler who takes it to an approved disposal facility and documents the chain. Your janitorial crew isn’t licensed to haul that waste, and pouring it anywhere else is illegal.
Here’s the part that surprises owners: even if someone scoops the trap by hand between visits, you still need a licensed hauler to take the waste away, because it’s the hauling and disposal that are regulated, not just the scooping. That’s why the pump out sits outside a normal cleaning contract, right alongside the other jobs owners assume their cleaner handles but usually do not.
What your restaurant cleaner does handle around the trap
Your cleaning crew has a real and useful role here. It just isn’t the pump out.
A professional restaurant cleaner:
- Keeps the area around the trap clean and grease free, so the space stays safe and doesn’t attract pests
- Cleans your floor drains and controls odor, which is where a filling trap usually shows itself first, covered in our guide to floor drain cleaning and odor control
- Wipes down the trap exterior and lid as part of the routine
- Watches for the warning signs, slow drains, a sulfur smell, gurgling, and tells you when it’s time to call the hauler
That last one is the quiet value. Your crew is in the kitchen more than anyone, so they catch a filling trap before it becomes a Friday night backup. They flag it; the hauler pumps it.
The manifest is the paper inspectors ask for
Every time a licensed hauler pumps your trap, they leave a signed waste manifest: the date, the volume removed, and proof it went to an approved facility.
Keep every one of them. That manifest is what a health or FOG program inspector asks to see, and it’s the difference between proving your trap is on a schedule and taking a fine because you can’t. File the manifests with the rest of your cleaning records, the same paperwork we cover in what inspectors want to see.
That’s the piece of paper from the opening. It costs you nothing to keep and a lot to lose.
What grease trap service costs
Grease trap service is priced per visit, and the range is wide because traps are.
- Small indoor traps typically run about $150 to $300 per visit, sometimes billed as a low monthly rate on a regular schedule
- Larger outdoor interceptors run higher, often $250 to $500 or more, because they need a vacuum truck and more labor
- What moves the price: the size of the trap, how easy it is to access, how often you service it, and local disposal fees
A trap on a regular schedule almost always costs less over a year than an emergency pump out after a backup, which comes with plumbing damage and lost service on top of the pumping.
How to run the handoff so the trap never gets missed
The trap gets missed when everyone assumes someone else owns it. A simple system fixes that.
- Keep a licensed hauler on a set schedule based on the 25 percent rule and your local FOG program, not on memory
- Let your cleaning crew be your eyes between pump outs, flagging odor or slow drains before they become a backup
- Keep the manifests on file so you can prove the schedule to any inspector
- Coordinate the two so the hauler and your deep cleaning aren’t tripping over each other
If you’re choosing a cleaning company, ask how they handle the trap. The right answer isn’t “we pump it,” it’s “we keep the area right, we watch it, and we tell you when to call your hauler.”
A cleaner who’s honest about that line is the one who’ll actually keep the backup from happening. That’s the kind of partner Excellence aims to be for restaurants across Northeast Pennsylvania: we own the cleaning, and we help you stay ahead of the trap.
Get that handoff right and the trap never backs up on a Friday night, because someone saw it coming.
Frequently asked questions
Do cleaning companies clean grease traps?
Cleaning companies keep the area around the trap clean and can tell you when it needs service, but they don’t pump it. Removing and hauling grease trap waste requires a licensed liquid waste hauler who provides a disposal manifest.
Who is responsible for cleaning the grease trap?
The restaurant owner is responsible for keeping the trap serviced, and hires a licensed grease hauler to do the pump out. Your janitorial crew supports that by keeping the area clean and flagging the trap when it fills.
How much does grease trap cleaning cost?
Most visits run about $150 to $500, depending on the trap. Small indoor traps sit at the low end, and large outdoor interceptors cost more because they need a vacuum truck and more labor. Size, access, and frequency drive the price.
How often should a grease trap be cleaned?
Service it before FOG and solids reach 25 percent of the trap’s depth, which for most kitchens falls between monthly and quarterly. High volume kitchens need it more often.
Can I clean my own grease trap?
You can scoop and clean a small indoor trap between visits, but you still need a licensed hauler to remove and dispose of the waste, because the hauling and disposal are what’s regulated. Most owners leave the full pump out to the hauler.
Do I need to keep the grease trap manifest?
Yes. The signed manifest the hauler leaves after each pump out is proof of legal disposal, and inspectors ask to see it. Keep every one on file with your cleaning records.
What happens if you never clean your grease trap?
The FOG hardens and blocks your lines, grease backs up through the lowest drain, you get odors and pests, and you risk a health code violation and an expensive emergency call. Regular service is far cheaper than a backup.