OK, I've heard of this before, but a few questions:
- How long do you leave the product in the solution? I realize it depends on the part and on the extent of rust, but generically-speaking, is this a week of soaking, a day?
- how long does the solution stay useable? If it seems weak, is the answer to add more lemon juice? or what typically is item that weakens?
- Will the local cat think it's a big margarita? Just kidding.