EaCo Chem Cleansol BC - Brushless Oxidation and Soil Remover for Most Surfaces - Highly Dilutable, All-Purpose Cleaner - Remove Deep Staining from Painted Metal, Wood, Vinyl + More! - 1 Gallon

https://a.co/d/09ZyOiEL This stuff is elite. I’ve said this to a few other people on this group but oxidation removal is a big job. You’re not gonna get it all with your washer. You’re gonna have to hand scrub that bitch to get it right. I would charge an insane amount personally. I did it for a while and then stopped offering the service because it’s horrible to do.