Keep Fats, Oil, and Grease (FOG) Out of Your Sink
To avoid sewage backups, never put fat, oil, or greasy food down the sink. Cooking oil and grease, meat scraps, gravy, mayonnaise, oily salad dressings, and high-fat dairy products can all clog pipes. It doesn't help to use a garbage disposal or rinse with hot water--the grease will harden further down the line.
Collect cooled liquid cooking oil (such as from a deep fryer) in a container with a tight-fitting lid. Bring the container to a collection center for recycling. Find locations at recyclewhere.org or www.baywise.org.
Motor oil is a toxic waste. Never dump it into sinks, floor drains, storm drains (which flow directly to creeks and the bay), or landfills. Check the websites above for hazardous waste collection centers near you.