Fun with bleach

We have a white enamel sink which has had these black marks in it since we moved in. I’ve used Clorax on it (and left it on over night) several times without much luck. Our Realtor Ardell said “fill it up with bleachy water and let it sit over night”. So – I did (well – I let it sit for 5 hours) and, it worked – it’s spotless now. So – if you have a off color white enamel sink with discoloring… give it a try.