DO NOT use steel wool pads to clean your stainless steel sink. The small iron particles of the pads will lead to rusting and corrosion. It is highly recommended to use scouring pads, such as ScotchBrite to clean.
DO NOT keep any mild steel or cast iron cookware in the stainless steel sink for long periods of time, since it will result in permanent staining of the sink.
DO NOT leave rubber dish mats, sponges, or cleaning pads in the stainless sink overnight. It can lead to staining and discoloration of the stainless steel sink.
DO NOT use chlorine bleach as a cleanser, for it may cause pitting. NOTE: Some bacterial soaps contain chlorine compounds.
BE AWARE that any sink drain cleaning product containing sulphuric or hydrochloric acid will damage the stainless steel sink.
PORCELAIN SINK CARE
Fill a porcelain sink with hot water and add a cup of bleach to it to deal with long standing stains. Let it sit for an hour or two. Clean it out with dish washing liquid to clean all traces of bleach out.
Finish by attacking any stains with scouring powder. If there are still marks left, try leaving a paste of scouring powder and water on the stain for a few hours. If everything else fails, wet a small pumice stone and gently rub the stain. Realize that this can damage the finish so only do this as a last resort--very carefully.
COPPER SINK CARE
After each use, the sink should be rinsed and towel dried thoroughly. To clean the sink, an ordinary mild detergent and soft cloth should be used, then rinse the sink thoroughly and towel dry. Harsh alkaline-based, ammoniabased, or harsh acidic-based cleaning chemicals or products are not to be used. Never use abrasive cleaners or scouring pads. To remove stains and tarnish, a good quality copper cleaner, following manufacturer’s instructions should be used. For added protection, coat with a fine sink wax. For tough stains try using a paste of baking soda and water applied with a sponge. Rinse thoroughly and dry with a soft cloth. Copper sinks can be used for all normal household tasks but avoid prolonged surface exposure to acidic foods such as tomato sauce and citrus products. If these products sit overnight in direct contact with copper, the surface may discolor. Should the surface discolor, it will start to darken back down with use. The natural patina process may also be affected by mineral content in your water supply. Removing any standing water with a soft cloth is recommended to prevent calcium staining and mineral buildup. To further age and patina a sink, dissolve a teaspoon of salt with 1/4 cup ammonia and apply to sink. Let dry for half an hour then wash with cold water and dry with a clean, soft cloth. Repeat process to further patina.
Bath sinks in copper