I'm from the country -
If - as far as you know - the mice are healthy in your part of the world -
and you are reasonably healthy and not pregnant -
I would take the fabrics outside - (I might consider a mask and gloves at this point)
Shake the loose stuff off -
Sort according to colors - wash the fabrics in HOT water with almost any detergent (maybe for 10 minutes) - on the most gentle cycle you have available. Don't overload the washer.
I would rinse the fabrics twice.
Then dry - either on a clothesline or in a dryer.
I think it's agitation and abrasion that makes fabric look old before it's time.
So - just fill the washer about half full of fabric - use maximum fill for water - and off you go.
Unless you are in a water restriction area - then just store everything in covered plastic bins until water is available. I still would shake the loose stuff off first.