I have a white kitchen sink.

Try Mr. Clean Magic Eraser.

You can also sprinkle baking soda, wait a few minutes, and spray vingear and water - and then scrub!

when I run my dish washer (I do mine before going to bed) I place a Cascade pod in the sink, fill it with water and leave it until morning. Wake up to a clean white sink, what could be easier?

comet and a green scrub pad or brillo pads

baking soda works well, non-abrasive and good for your drains. environmentally friendly.

i dont believe so

I have a friend who is indian and cooks with lots of staining spices... she swears by vinegar: leave it on stained surfaces for as long as 24 hours and then scrub with the "magic eraser" and baking soda.

Another tip: try to break open a little dishwasher pellet pod. put that powder on a wet sponge and scrub. I use this all the time on stained white formica surfaces. (not sinks but worth a try)

Bar Keeper's Cleaner.

I'm with bar keeper's but also lemon and baking soda.

Thank you for all the helpful tips