Ugh -What to do with mold on filters?

[SnowHot]

I have a spare set of filters to make it easier to switch out when cleaning and such.
I feel that I'm careful to make sure they're dry when I store the spare set, and I rarely seal them up in an air tight container, but evidently I didn't dry them out completely and the container I store them in was sealed without my knowledge.

I pulled them out to swap filters today after doing a bit of a cleaning and found a few dark spots which I assume is mold.
Is there a way to clean this thoroughly or shall I discard the filters?

[Conine2965]

Soak in bleach and water then spray out good

[SnowHot]

Thanks.
I was unsure that I should use bleach because I understood there were other issues with it.

For the time being, I took the necessary time to clean the filters that were in the hot tub.  Fortunately I had time to let them soak and clean properly. I don't always have the luxury of time.

I'll get the extra filters clean before the next switch.

[Conine2965]

It's happened a couple of time to me. I just make sure to spray out  well.

[SnowHot]

Thanks!