Is it okay to keep washing and reusing microfiber cloths for cleaning monitors?

I've read in multiple places that microfiber cloths are one of the few materials safe enough to clean monitors without risk of scratching, so I use those whenever I need to clean the outside of any electronics.

Of course, this gets the cloth pretty dirty. I could wash them, but I know that washing/drying fabrics tends to wear them out, and I'm conceed that the microfiber might be more likely to scratch if it's wo. The cloths are nicely made so it feels wasteful to throw them out after one use.

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