Mould? On Stored Clothing

[pastafreak]

I've been sorting out some stored clothing for when charity shops reopen. I found 2 pairs of black jeans that had been stored in a black bag. They have spots of what appears to be powdery mould or mildew on them. What's the best way to remove this?

[bookbinder]

https://www.persil.com/uk/laundry/laundry-tips/stains/how-to-get-rid-of-mildew-on-fabric.html

[ummmm]

Wash them on the hottest setting you can. See what happens.

[pastafreak]

I'm not sure I want to risk shrinking them, ummmm.
I'll take a look at that link, bookbinder.

[ummmm]

That's why I said the hottest temp you can.