The Essential Guide to Regular Grease Trap Cleaning: Why and How Often?

Maintaining proper grease trap cleaning is essential for restaurants and other food service businesses. Grease buildup from cooking oils and fats can cause plumbing issues like clogs and backup if allowed to accumulate in the grease trap. Not only can this create problems in your drainage system, but failing to properly empty and clean grease traps on a regular schedule can also result in hefty fines from regulators.

This guide will explain why regular grease trap cleaning is so important and provide recommended cleaning frequencies based on your business’s size and output. Following the best practices outlined here can help you avoid costly plumbing emergencies and regulatory penalties. 

Grease Traps Brief Overview 

Grease traps, also known as grease interceptors, are plumbing devices installed in commercial kitchen drain lines to collect and limit fats, oils, and grease (FOG) from entering wastewater systems. As a solid form of waste, FOG can build up in drain pipes and cause blockages that lead to backups, expensive repairs, and in severe cases, flooding. 

Grease traps function by allowing water to pass through while trapping heavier FOG molecules. The collected waste then needs to be manually removed through regular cleaning and maintenance. Most commercial kitchens that prepare food are required by local authorities to install appropriately sized grease traps based on the facility’s equipment and dishware. Maintaining clean grease traps is essential for both plumbing functionality and compliance with regulations aimed at preventing costly sewer issues. 

The Importance of Regular Cleaning 

Consistent grease trap cleaning is crucial to ensure optimal performance and longevity. Over time, uncleaned FOG builds up within the tank and causes it to function at diminished capacity. This reduces its ability to effectively separate and retain grease, allowing more of the problematic waste to pass through the drains. Left unmanaged for too long, grease traps can become completely clogged and cease working entirely. 

best selling wall panels - shaker wall panelling diy

Beyond functionality concerns, failure to properly maintain grease traps risks drainage backups, plumbing damage, and discharge of prohibited levels of FOG into sanitary sewers—issues that can incur hefty fines from regulators. Regular cleaning removes accumulated waste before it becomes an obstruction. It also keeps grease trap internals clear for a thorough inspection to detect any potential breakdowns or corrosion early. Proactive maintenance through scheduled cleaning is key to compliance and avoiding costly repair bills down the line. 

Determining Cleaning Frequency: Key Factors 

The appropriate frequency of grease trap cleaning depends on variables specific to each commercial kitchen. Larger facilities that serve high volumes of food tend to generate more FOG waste and require more frequent attention. Important considerations include the size and design of the trap, meal preparation methods, typical dishwashing practices, and the type of establishment (restaurant, deli, etc.). 

As a general guideline, grease traps serving smaller kitchens producing moderate waste may need cleaning every 4-6 weeks. Larger traps at busy full-service restaurants may fill up faster, usually requiring cleaning every 2-4 weeks. High-volume food operations like catering halls may see FOG levels rise quicker, warranting cleaning as often as 1-2 weeks. The goal is to remove 25% of the total capacity before it reaches maximum. Regular visual inspections help determine if changes to the cleaning schedule are warranted. 

Signs Your Grease Trap Needs Cleaning 

Several telltale indicators suggest it’s time for a thorough cleaning session: 

  • Slow drain times – Grease buildup can coat trap interior surfaces and pipes, slowing water flow. 
  • Foul odors coming from drains – Trapped grease starts to break down and smell. 
  • Cleaning tools become coated in thick grease after removing cover/baffles. 
  • Floating grease layers visible at water line inside tank. 
  • Evidence of previous cleaning no longer visible beneath new layers of FOG. 
  • Pests like flies or rodents attracted to access covers. 

Addressing issues promptly avoids more serious backups requiring demanding drain snake operations or potential fines from regulators conducting inspections. 

DIY Cleaning vs. Professional Services 

For some small kitchens with basic grease trap setups, occasional thorough cleaning by facility staff may be a viable option. However, professional grease trap cleaning services are typically recommended for most commercial operations. Experts have specialized pumps, vacuums, and chemicals to efficiently and thoroughly clear hard-to-reach areas without damaging sensitive internals. 

Grease trap cleaning poses some health and safety risks if not done properly. Health codes also require thorough documentation of each cleaning, something DIY efforts may struggle to provide. Professional crews are fully certified and insured, minimizing liability. Their specialized equipment can fully empty traps within an hour, minimizing disruptions. For busier establishments especially, outsourcing to reputable grease trap services may offer the most cost-effective compliance solution long-term. 

Step-by-Step Guide to DIY Grease Trap Cleaning 

If handling the job internally, follow these steps for effective DIY grease trap cleaning: 

  1. Disconnect power source and shut off water intake valve. 
  1. Remove access covers and baffles to fully expose interior chambers. 
  1. Scoop out as much solid waste as possible using buckets or containers. 
  1. Spray interior surfaces with degreasing cleaner or hot water, then scrub with brush or rag. 
  1. Attach garden hose to vacuum pump outlet and thoroughly suck all liquid out. 
  1. Rinse tank with fresh water until rinse water runs clear. 
  1. Inspect for any cracks or leaks before closing back up. 
  1. Sanitize all removable parts before replacing. 
  1. Log cleaning details including date, quantities removed, and any issues spotted. 
  1. Restore water and power, then test drains are running freely. 

Patience and protective equipment like gloves and coveralls are essential when tackling the messy job internally. 

Selecting a Professional Cleaning Service 

designer dupe furniture deal and voucher code

When outsourcing grease trap maintenance, consider providers offering: 

  • Licensed, bonded technicians who undergo ongoing training 
  • OSHA and EPA compliance certification for chemical handling 
  • Fleet of high-powered vacuuming and pumping equipment 
  • Customer references and reputation for fast, effective service 
  • Service level agreements for response time and reporting 
  • Competitive pricing inclusive of tipping/disposal fees 
  • Online dashboard to track service history and trap conditions 
  • 24/7 emergency support for clogs or spills 

Look for local companies invested in your area with a physical business address. Multiple cleaning options per month make developing routine schedules flexible. Reputable grease abatement specialists take the hassle and liability out of proper trap upkeep. 

Maintaining a Cleaning Schedule: Best Practices 

Whether performing cleanings internally or outsourcing to a service, keeping a consistent cleaning schedule optimizes performance and compliance: 

  • Note scheduled dates clearly on calendar reminders 
  • Secure dedicated budget for routine and emergency needs 
  • Involve managers in tracking cleaning due dates 
  • Request high-level reports after each service visit 
  • Increase frequency if inspections note accelerated buildup 
  • Consider extra “deep cleans” for major holidays or events 
  • Celebrate staff for proactively flagging maintenance issues 
  • Train new hires on location and care of grease control systems 

Regular communication with service providers and a culture of grease trap prioritization helps maintain hygienic drains reliably. 


By keeping grease traps functioning at optimal capacity through proactive cleaning schedules, facilities enjoy numerous benefits long-term: 

  • Maximized FOG separation efficiency prevents costly drain clogs 
  • Health inspection compliance avoids non-compliance penalties 
  • Lower risk of grease-related plumbing damages or backups 
  • Peace of mind from not exposing property to sewage liabilities 
  • Extended operational lifespan between major grease trap replacements 
  • Potential sewer discharge fee savings from reduced FOG at treatment plants 

Regularly removing just 25% of a grease trap’s capacity makes a big difference. With the right service provider or DIY regimen, compliant grease control systems pay off for commercial kitchen operations through increased safety, cost control and sustainable compliance over the long haul. 

Scroll to Top