What color is your sink? I really need to find something that works on our not-Kohler cast iron white sink.

It's white. I think it also works on black cast iron, or any cast iron product. I was shocked at the ease of cleaning it.

ETA: Spanish, I was so upset because the sink is only ten years old and I thought about complaining to Kohler.

Shake the bottle before use. :)

Thanks. I'm going to try it.

There's another product I swear by. Last summer I cut the top of my forearm and the band-aid would never last more than an hour. It was the Band-Aid brand. At Walmart I bought their Equate flexible fabric bandages and those babies last forever.

Thanks. I’ve got a white cast iron tub that’s less than three years old and it looks dull. I’ll try this.

Just found this article. Scroll down to the email from Kohler, but even if it's not a kohler sink, it applies to cast iron sinks.

Kohler says no to these cleaners

FYI even though it's highly touted for cleaning, Bar Keepers Friend has some ingredients (like oxalic acid) that make it inappropriate for certain materials. Plus IMO it stinks! I've used Bon Ami forever on porcelain sinks and tubs and stainless sinks and never had issues.

Anyone have a fireclay sink? I haven't found anything that works well for cleaning.

Grace, I looked it up and so far I've only read one article recommending Soft Scrub with bleach. Is your sink white?

Before I started using the Kohler cleaner (I bet it may work on fire clay, something worth looking into), after I cleaned my sink I'd use Clorox Bleach Foamer, I think it was for bathrooms, but used it on my kitchen sink and it whitened the sink and left it shiny. But the fumes were awful so I'd open windows and leave the room for a few minutes. It worked pretty good.

Grace, this was on the Kohler website about fire clay sinks.

Cleaning fire clay sinks

I had an order all ready to amazon and just for kicks added this Kohler sink scrub (less than $4 after all).

I really tried to make it work for my white Kohler sink. No dice. Don’t waste $4.

Sorry the cleaner didn't work for you. Did you shake the bottle well? I ordered my second bottle last week so I won't run out.

Littlebug, have you tried Clorox foamer? The bleach helps whiten the sink but it takes longer than using the Kohler.