Between washings, when I have the vacuum out, I vacuum mine with just the hose (no attachments). Gets all the dirt out.

I forgot to add that when I wash the duster, I hang it from with the wool pointing down. When it is dry, I fluff it out by rolling the handle quickly between my palms. (I have never combed it out.)

I stuff it into the vacuum hose between washings.

"Washing" is a swish in sudsy water and a rinse.

Thanks!

Yes, the glue dissolved on mine when I washed it.

Shake it outdoors. I would never wet mine.