How do you handle mold/mould in the subwoofer driver?

Hello,

You know, fungi like place without light and subwoofer enclosure is a very good place for this living organism. If we consider that at some sobwoofer we also add textile or metallic grill the environment became even better for then to grow.

It's also important to mention that some guys may live in a very humid country or place witch will make this issue even worse.

Due to the covid situation and having my loudspeakers stored for too long time and found is issue at my drivers, probably it happen not only to me, so, how do you guys handle mold/mould in the subwoofer driver?

Someone knows if they can generate permanent damage or if they can affect the drivers parameter in a significant way? mainly at the spider (driver suspension).

Rust is very common and will affect all the driver soon or later regarding the quality of the coating/paint used in the production process, but it's more visual issue, but mold I'm not much used to see it.

Note.: I made a gig yesterday as it's and the sound quality was not affected yet but today I clean up with lysoform Spray so I hope I was able to kill them for a good period of time and the product don't degrade the spider or the cone due to chemical interaction.
 

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I screw a glass cleaner (fine) sprayer to a bottle of medicinal hydrogen peroxide and spray away; also great for dissolving dust on knickknacks, like the interiors of model cars, etc., and use a very fine artist's paint brush if you feel the need to do more.

If wanting to buy something, then a spray cleaner for artificial plants is basically the same thing except with scent added and costs a lot more IME, though been tempted to get one for its super fine misting sprayer.

Long term, DIY desiccant packs is my choice in the garage, shop and anything that rusts I periodically coat with dry lubricant like used on locks, etc., for extra protection since I live in an area where most of the year the relative humidity is these areas are > ~74 %.
 
I’ve used 50/50 water and bleach applied lightly to paper cones, very carefully.

After some drying time, a light coat of clear lacquer sealed things up to help prevent further biological growth. The bleach is pretty destructive, so a dampened rag and light application on the spots is better than a direct application.

Looks like crap since the black spots are still visible, but stopped it and they sound great years later.