To get rid of those ugly grease and soap-scum buildups in your porcelain enamel sink or tub, scrub it with a solution of 1 tablespoon ammonia in 1 gallon (3.7 liters) hot water. Rinse thoroughly when done.
To put the shine back in your stainless steel
sink, sprinkle it with baking soda, then give it a rubdown — moving in the direction of the grain — with a moist cloth. To polish dull chrome trim on your appliances, pour a little baking soda onto a damp sponge and rub over the chrome. Let it dry for an hour or so, then wipe down with warm water and dry with a clean cloth.
Want to get your white porcelain sink as good as new? In a well-ventilated area on a work surface protected by heavy plastic, place several paper towels over the item (or across the bottom of the sink) and carefully saturate them with undiluted bleach. Let soak for 15 minutes to a half hour, then rinse and wipe dry with a clean towel. Note: Do not try this with antiques; you can diminish their value or cause damage. And never use bleach on colored porcelain, because the color will fade.
Get rid of those stubborn stains — even rust — in your stain-less steel or porcelain sink. Make a paste of 1 cup borax and 1/4 cup lemon juice. Put some of the paste on a cloth or sponge and rub it into the stain, then rinse with running warm water. The stain should wash away with the paste.
To buff your stainless steel sink back to a warm glow, sprinkle flour over it and rub lightly with a soft, dry cloth. Then rinse the sink to restore its shine.
They make commercial cleaners with a very fine abrasive designed to shine up chrome, but if you don’t have any handy, the fine abrasive in non-gel toothpaste works just as well. Just smear on the toothpaste and polish with a soft, dry cloth.
Put the shine back in your porcelain sinks and bathtubs by giving them a good scrubbing with full-strength white vinegar, followed by a rinse of clean cold water. To remove hard-water stains from your tub, pour in 3 cups white vinegar under running hot tap water. Let the tub fill up over the stains and allow it to soak for four hours. When the water drains out, you should be able to easily scrub off the stains.