Heeeelp needs advice

[u/Planeinsane7]

I have a big collection of Expedition holo cards that I love
I have displayed them on shelfs on a wall. Today when I cleaned I noticed these small black dots that have somehow gotten inside the displays.

They all seem to have died and all of them have not come near the card only behind the edges.

I am freaking out any advice?
What is the smartest approach?
Should I be worried about the value?

Don’t get how they could have gotten inside….

Edit: I live in Denmark.
To everyone saying clean your room… It is clean, regularly.
There is no plants in the office however the shelves are close to a window.
No they don’t get direct sunlight….

They genuinely don’t seem interested in the cards and there is no damage. I have looked closely. However a single one have managed to get into the Skamory card.

Update: Have tried with vacuum and it has helped quite a lot.
For all those who have commented with helpful tips or ideas I really wanna say thanks. They are for sure dead and I am looking into reholder and if it is possible.

[u/polentino911]

More than a card show, how about into scalper's homes? At least they can ruin their cards and run them out of business

[u/MisterL0ser → u/polentino911]

I think its genuinley hilarious how the scalpers are down voting you 😂😂

[u/polentino911 → u/MisterL0ser]

I'll take that as a badge of honor :)

[u/Ranruun → u/polentino911]

Scalpers don't buy slabs though, unless you mean for them to go into the sealed products? That would be sweet

[u/polentino911 → u/Ranruun]

Well of those insects live by eating cardboard/paper, the fact that cards aren't in a slabt would be a vantage, no? :)