Keeping the coils clean will make your refrigerator last longer and work better. Don't forget to unplug the refrigerator while doing this. While cleaning, don't forget the door gaskets. This will make them last longer, but only clean with baking soda. Harsh detergents or bleach will deteriorate them.
Sinks Baking soda or club soda is excellent to clean stainless steel sinks.
To remove water spots from a stainless steel sink, use a cloth dampened with rubbing alcohol. Spots on stainless steel also can be removed with white vinegar. If your kids leave toothpaste in sinks, take a washcloth and clean the sink and fixture with the paste. Rub stainless steel sinks with lighter fluid if rust marks appear. After the rust disappears, wipe with your regular kitchen cleaner.