A well trained staff is your best defense against FOG! Grease only gets into the sewer system one way—people put it there! 
Train your staff in the Kitchen Best Management Practices (BMPs). Soon these easy changes will become second nature reducing the grease going into your system.
NEVER, NEVER, NEVER pour grease directly in the drain. 
Liquid grease is deceiving. Once it cools, it will solidify and stick to the edges of the sewer pipe. Pouring hot water down the drain only moves the grease further down the line; it doesn’t eliminate the problem.
Always scrape dishes and when possible dry wipe them. 
Greasy food can cause as much damage as pouring grease directly in the drain! Remember, garbage disposals only chop up greasy food, they don’t reduce FOG. Scraping dishes reduces grease and lowers risk of closures due to sewer backups. Closures hurt your reputation and revenue.
Post "No Grease" signs above sinks, drains, and dishwashers. 
Reminders help minimize grease discharge to the sewer or grease control device, which reduces overflow risk. The fewer overflows, the less cost for plumbing repairs.
Make sure drain screens are in place and can’t be removed. 
When dishes and food scraps fill the grease control device, more pumping is required because the device reaches capacity sooner. Keep costs down; pump grease, not debris.
Wash grills, floor mats, and hood filters in a mop sink connected to the grease control device (GCD). 
Washing these items outside allows the grease to go directly into storm drains which flow into the Chesapeake Bay.