The rust removal product that I found at work seemed to really do the trick. I was a little skeptical of it at first, since it said that it was not a dangerous chemical. Every kind of product that I have ever used that actually took rust off, has been highly toxic. This stuff was called evapo-rust and I know that because I wrote it down to show to my husband.

My husband buys lots of old auto parts from garage sales and flea markets and then cleans them up to resell. If he had this evapo-rust to use on them for rust removal, then I think he would be able to get more money out of them and turn a high profit. He might also buy things that he would not have bought before.