A grease trap needs pumping once fats, oils, grease and solids build up to 25 percent of the liquid depth in the tank. For a busy Rochester Hills kitchen that can mean weekly or biweekly service. Rochester Hills Porta Pros runs commercial grease trap pumping across the city, plus emergency calls when a line backs up.
The honest answer: it depends on how much you cook and how big the trap is. The trigger point is fixed though. Once grease, oil and solids reach 25 percent of the liquid depth, the trap stops working the way it should and wastewater starts carrying grease downstream. High-volume kitchens in Rochester Hills, especially fryers and grills running double shifts, hit that mark faster than a quiet cafe. We check depth on every visit and set a schedule from there instead of guessing. Restaurants near Auburn Hills, 6.3 miles west, and out toward Bloomfield, 12.0 miles southwest, run on the same rule regardless of zip code. If you are still building out a kitchen and need interim sanitation, our septic pumping service page covers holding tanks too, and a holding tank rental can bridge a renovation.

Pricing depends on trap size, grease load and whether it is a scheduled stop or an emergency call. Below is a general septic-family service reference; grease trap invoices vary by volume, so ask for a site-specific quote.
| service | duration | low | typical | high |
|---|---|---|---|---|
| septic pumping | day rate | $150 | $250 | $300 |
| septic pumping | weekend rate | $50 | $100 | $150 |
| service call fee | day | $100 | $175 | $300 |
Commercial accounts on a recurring route usually pay less per visit than a one-time emergency grease trap pumping call, the same way a septic tank pumping cost drops with a standing schedule. If your kitchen also needs porta john rental during construction, or a temporary fence rental around a loading dock while a lift station is serviced, we bundle those with the same crew visit.
If grease is backing into a floor drain, standing water smells sour, or a slow drain has gone from slow to stopped, that is an emergency, not a maintenance call. Rochester Hills Porta Pros runs emergency grease trap pumping alongside our emergency septic service line, and we treat a stopped kitchen line the same urgency as a stopped restroom. We have covered calls out toward Washington, 12.8 miles northeast, and Waterford, 14.2 miles west, on the same day they came in. A backed-up trap during dinner service costs a restaurant real money every hour it sits, so we do not put these calls on a waiting list. Ongoing sanitation needs during a rebuild, like portable restroom rental or a handwashing station rental, get scheduled around the same visit when it makes sense.
Regular grease trap pumping also keeps a kitchen inspection-ready. OSHA 1926.51(a)(1) requires an adequate supply of potable water at any place of employment, and a kitchen with a backed-up trap is not meeting that bar for its own crew, let alone customers. For construction crews building or remodeling a kitchen, our construction site services page and dumpster rental cost guide round out the site plan.
It depends on trap size and grease volume, so we quote per site rather than a flat number. Scheduled commercial accounts typically cost less per visit than one-off emergency calls. Request a quote and we will look at your trap and usage before pricing.
Once fats, oils, grease and solids hit 25 percent of the liquid depth, it needs pumping. High-volume kitchens often need weekly or biweekly service, while lower-volume operations can stretch that interval. We track depth on-site rather than guessing.
Yes. A grease trap catches fats, oils and grease before they hit the sewer line, while a septic system handles all wastewater from a property. Both need periodic pumping, but on different triggers, see our septic tank cleaning page for the septic side.
Usually, yes. A backed-up trap during service hours gets priority scheduling, similar to our emergency porta potty rental response for job sites. Call ahead of your lunch or dinner rush if you can.
We do. Crews regularly cover Auburn Hills, Orion, Bloomfield, Washington and Waterford. Check service areas for the full coverage map, or see porta potty rental in Rochester Hills for our core service page.
Yes. Rochester Hills Porta Pros delivers grease trap pumping across Rochester Hills and the surrounding metro, with same-day and next-day drop-off available on most orders.
Pricing depends on the unit and how long you need it. See our cost breakdown and request a free quote for an exact figure.
Standard rentals include scheduled service — a pump-out, a clean, a restock and fresh deodorizer. Busy or hot-weather sites can be serviced more often.
Call now or request a free quote — clean units, on-time delivery, transparent pricing.