Apologies if this is a dumb question but I recently got two pans from a second hand store and I covered them with easy off, put them in separate plastic trash bags, and left them alone in my basement for several days. When I rinsed off the oven cleaner, there was a light coating of rust all over both pieces. Is it possible for a pan to rust during the cleaning process like that? Both pieces were very heavily covered with gunk and if it was just one pan, I would assume that it was rusted already, but because they both were like that, I'm wondering if maybe I did something wrong or maybe left them for too long? I soaked both pans in 50/50 vinegar solution and then scrubbed them and most of the rust came off. But for future reference, since I don't have a tank or lye bath, I thought I would see if I was doing something incorrectly with the oven cleaner? Thank you!