UPDATE: the commenters’ verdict is unanimous: this is not a good idea, because it will damage the iron tip of the soldering iron. Thanks everyone!
These sort of sponges are sold for cleaning the tip of soldering irons:

Now, maybe it’s an odd question – but is there any reason not to use one of these kitchen scrubby things instead?

They are way easier to get, plus they are cheaper.
I’m wondering mainly:
- can you think of a reason why it could be dangerous to use the stainless steel one? (like, poisonous fumes or something)
- would it hurt the soldering iron tip?


here is a schematic diagram with the structure: https://www.thermaltronics.com/datasheet/M8SB276#item38791
the core of soldering irons has been copper for a long time.
Thanks, that’s very helpful