Frequency:
Small indoor grease traps: Every 1–2 weeks
Important Notes Before Starting
Check your local regulations, Some jurisdictions require certified contractors to clean or dispose of grease.
Always wear protective gear: gloves, safety goggles, and possibly a face mask.
Ensure proper ventilation; grease trap odours can be strong and hazardous in confined spaces.
Supplies & Tools
Essential Tools | Optional Tools |
Rubber gloves | Wet/dry vacuum |
Goggles + mask | Degreasing solution |
Long scoop or ladle | Scraper/spatula |
Bucket with tight-fitting lid | Drain snake (if clogs are suspected) |
Trash bags or oil-safe containers | Baking soda + vinegar (odour neutraliser) |
Dish soap & hot water | Shop towels or rags |
Step-by-Step: How to Deep Clean a Grease Trap
Step 1: Turn Off Water Flow
Turn off any dishwashers, sinks, or appliances connected to the trap.
Let the system cool for 10–15 minutes so grease can settle.
Step 2: Remove the Lid
Carefully unscrew or unbolt the grease trap cover.
Be prepared for strong odours.
Use a pry tool if needed, but avoid damaging the gasket or seal.
Step 3: Scoop Out the Grease and Solids
Use a ladle or scoop to remove the thick layer of grease floating at the top.
Place the sludge into a seal-tight, grease-safe container (never in regular trash bags).
Scoop out solids and food particles from the bottom.
Step 4: Scrape & Clean Interior Walls
Use a scraper or stiff brush to scrub the sides, lid, and baffles.
Remove stuck-on grease deposits and sludge.
Wipe down with shop towels as needed.
Step 5: Flush with Hot Water & Soap
Pour hot water mixed with degreasing soap into the trap.
Let it sit for 5–10 minutes to loosen remaining residue.
Use a scrub brush to clean crevices and drain areas.
Step 6: Inspect for Blockages
Check the inlet and outlet pipes for grease buildup.
Use a drain snake or hot water flush if flow is restricted.
Step 7: Replace Lid & Test Flow
Carefully reseal the lid and secure bolts/screws.
Turn on the water briefly to ensure proper drainage and no leaks.
Confirm that the flow is unrestricted.
Step 8: Dispose of Waste Properly
Never pour grease down the drain.
Contact a licensed waste hauler or follow your city's disposal program
Label and store used grease safely until pickup.
Final Touches
Spray vinegar or baking soda solution to neutralise lingering odours.
Log the date and initials in a maintenance record for inspections.
Clean and disinfect any tools used.
🚫 Common Mistakes to Avoid
Letting grease traps overflow or go too long without cleaning
Dumping waste into garbage or drains
Forgetting to reseal the trap correctly (causes foul smells and leaks)
Using harsh chemicals not rated for grease traps (can damage plumbing)
✅ Summary Cleaning Schedule Example
Trap Type | Cleaning Frequency |
Small indoor | Every 1–2 weeks |