I soak, then hand wash my pads with a mild organic soap, hang them out to dry and reuse them. (Yeah, I know, the fabric isn't organic. I am working on that. And I figure the soap can't hurt.)
Once a month after my period I machine wash everything with a mild soap and hang them up to dry.
You can put them in the dryer, but I feel that the heat cooks the PUL and over time cause it to break down faster.
I store my pads in a basket covered with bit of scrap toweling.