Love Barkeeper's Friend, cleans stainless steel beautifully, and also porcelain sinks that get silver marks from pots. The difference from Comet/Ajax is that BK friend has oxalic acid and is safe with septic tanks. Oxalic acid is great at removing rust stains in dishwashers, toilets, etc. I can get it here in Idaho at K-mart and local supermarkets. Great stuff!! There are some cautions: may etch some finishes.