I wouldn't use the same pad if you change polishes. I've left my edge 2k wool pads soaking in Snappy Clean in a five gallon bucket for several days before. You definitely will want to have some sort of washing system for them. Just spurring them when you're done isn't good enough.
As I mentioned, I use Snappy Clean pad cleaner in a five gallon bucket. Then I rinse them out thoroughly in a sink, then put them on the rotary and spin them at 1.8k for a few minutes, then either let them air dry, or put them in the clothes dryer on low heat. Once they are *completely* dry, I then seal them up in Ziplok bags. You really do need to make sure that they're completely dry first, or else they will get moldy in the plastic bags.
Here's the only pad in the Edge 2k wool lineup you didn't get. The white finishing wool:
Notice how the wool fibers aren't twisted into looking lilke yarn. It's the softest fibers I've ever felt.