We cleaned a very dusty old farm house for two days…Lots of Oxi-clean to clean up all the painted surfaces and Murphy’s oil for the antiques. This cast iron sink was in really rough shape. It didn’t come out perfect but the customers didn’t think we could do anything with it. We used Oxi-clean boosted with 7th generation hydrogen peroxide cleaner. Oxi-clean actually turns into hydrogen peroxide and soda ash as it reacts so the two products complement each other well. We also use this combo to power wash shakes when prepping for stain and on wooden decks before paint.