<human>: Objective: how to clean a cast iron skillet

Which of the following solutions is more sound in terms of naive physics reasoning?

OPTIONS:
- let cool, and dump coarse salt into the pan. wipe out with paper towels.
- let soak in a mixture of bleach and vinegar for two days, and wash as usal
<bot>: let cool, and dump coarse salt into the pan. wipe out with paper towels.