I am a big fan of old skool Bon Ami (120 years old!) because it's a great green cleaning scrub that kicks dirt's ass without the off-gas. (I think I have a new ad campaign for the company, dontcha think?)
You should SEE what Bon Ami did to the rust and crud on the metal framed chairs! That's right, it kicked rust's ass. What a revelation! Check out the before/after on Cecelia's chair.